JPH1170596A - Reinforcing fiber reinforcement, method for reinforcing concrete structure, and method for manufacturing reinforcing fiber reinforcement - Google Patents
Reinforcing fiber reinforcement, method for reinforcing concrete structure, and method for manufacturing reinforcing fiber reinforcementInfo
- Publication number
- JPH1170596A JPH1170596A JP9367755A JP36775597A JPH1170596A JP H1170596 A JPH1170596 A JP H1170596A JP 9367755 A JP9367755 A JP 9367755A JP 36775597 A JP36775597 A JP 36775597A JP H1170596 A JPH1170596 A JP H1170596A
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing
- reinforcing fiber
- covering member
- tubular covering
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012783 reinforcing fiber Substances 0.000 title claims abstract description 256
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 171
- 239000004567 concrete Substances 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 63
- 230000002787 reinforcement Effects 0.000 title claims abstract description 55
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 154
- 239000011347 resin Substances 0.000 claims abstract description 154
- 239000000835 fiber Substances 0.000 claims description 53
- -1 polyethylene Polymers 0.000 claims description 24
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 18
- 239000004917 carbon fiber Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 17
- 239000004698 Polyethylene Substances 0.000 claims description 12
- 229920000573 polyethylene Polymers 0.000 claims description 12
- 239000004743 Polypropylene Substances 0.000 claims description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 11
- 229920001778 nylon Polymers 0.000 claims description 11
- 229920001155 polypropylene Polymers 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 7
- 229920006231 aramid fiber Polymers 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000012784 inorganic fiber Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000004760 aramid Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 9
- 238000002347 injection Methods 0.000 description 28
- 239000007924 injection Substances 0.000 description 28
- 238000005470 impregnation Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
(57)【要約】
【課題】 建設現場にて任意の形状に容易に折り曲げる
などの加工を施すことが可能であり、作業性において優
れ、例えばコンクリート補強筋として使用可能な強化繊
維補強筋、この補強筋を使用したコンクリート構造物の
補強方法及び強化繊維補強筋の製造方法を提供する。
【解決手段】 強化繊維補強筋１は、多数本の強化繊維
ｆを有する補強繊維束２と、補強繊維束２の長手方向に
沿って延在し、十分な空隙を有した態様で補強繊維束２
を囲包して配置された可撓性の管状被覆部材４と、を有
する。所望に応じて、環状被覆部材４内には、予め樹脂
が注入され、補強繊維束へと含浸され半硬化状態に保持
される。
(57) [Summary] [Problem] Reinforcing fiber reinforcement that can be easily bent into an arbitrary shape at a construction site, has excellent workability, and can be used as a concrete reinforcement, for example. Provided are a method for reinforcing a concrete structure using a reinforcing bar and a method for manufacturing a reinforcing fiber reinforcing bar. SOLUTION: A reinforcing fiber reinforcing bar 1 includes a reinforcing fiber bundle 2 having a large number of reinforcing fibers f, and a reinforcing fiber bundle extending in a longitudinal direction of the reinforcing fiber bundle 2 and having a sufficient space. 2
And a flexible tubular covering member 4 which is arranged so as to surround the above. If desired, a resin is injected into the annular covering member 4 in advance, impregnated into the reinforcing fiber bundle, and held in a semi-cured state.
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば鉄筋の代替
物として使用可能な強化繊維を使用した補強筋に関する
ものであり、更に詳しく言えば、本発明は、鉄筋コンク
リート構造物を建設する際に、或は既設コンクリート構
造物を補強する際に、鉄筋の代替物としてコンクリート
中に埋設して使用することのできるコンクリート補強筋
及びコンクリート補強技術に関するものであり、特に、
炭素繊維などの強化繊維を使用し、強度的に優れている
だけでなく、現場での作業性に優れ、しかも耐候性、耐
腐食性に優れたコンクリート補強筋及びこのコンクリー
ト補強筋を使用したコンクリート構造物の補強方法、更
にはコンクリート補強筋の製造方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar using reinforcing fibers which can be used, for example, as a substitute for a reinforcing bar. More specifically, the present invention relates to a method for constructing a reinforced concrete structure. Also, the present invention relates to a concrete reinforcing bar and a concrete reinforcing technology that can be used by being embedded in concrete as a substitute for a reinforcing bar when reinforcing an existing concrete structure.
Concrete reinforcing bars using carbon fiber and other reinforcing fibers that are not only excellent in strength but also excellent in workability at the site, and excellent in weather resistance and corrosion resistance and concrete using this concrete reinforcing bar The present invention relates to a method for reinforcing a structure and a method for manufacturing a concrete reinforcing bar.
【０００２】[0002]
【従来の技術】鉄筋コンクリート構造物に使用される従
来の鉄筋は、酸、アルカリ、塩分に対する耐腐食性にお
いて劣っており、又、耐候性及び作業性においても問題
があり、これらの問題を解決するべく、鉄筋の代替物が
種々提案されている。例えば、特開平４−３６１０２２
号公報には、補強繊維の繊維束を組紐状に編成して、こ
れに結合剤を含浸させて繊維体を作製し、この繊維体に
張力を掛けながら、しかも加熱して結合剤を硬化させた
代替鉄筋を開示している。又、特開平６−３３０５８７
号公報には、前記特開平４−３６１０２２号公報記載の
代替鉄筋はコンクリートのアルカリ成分によって劣化
し、強度が低下することがあるとの観点から、高張力繊
維を編組した紐に接着剤を含浸させて固化し、更に、そ
の外周に耐アルカリ性の薄い熱収縮性チューブを被覆し
たコンクリート補強筋が開示されている。2. Description of the Related Art Conventional reinforcing bars used for reinforced concrete structures have poor corrosion resistance to acids, alkalis and salts, and also have problems in weather resistance and workability, and solve these problems. For this reason, various alternatives to reinforcing bars have been proposed. For example, JP-A-4-361022
In the gazette, a fiber bundle of reinforcing fibers is knitted into a braid, impregnated with a binder to produce a fibrous body, and while applying tension to the fibrous body, the fibrous body is heated and the binder is cured. Disclosed alternative rebars. Also, JP-A-6-330587
Japanese Patent Application Laid-Open No. 4-361022 discloses that the reinforcing bar described in Japanese Patent Application Laid-Open No. 4-361022 is impregnated with an adhesive into a braided string of high-tensile fibers, from the viewpoint that the reinforcing bar may be deteriorated due to an alkali component of concrete and the strength may be reduced. A concrete reinforcing bar is disclosed which is solidified by heating and then coated on its outer periphery with a thin alkali-resistant heat-shrinkable tube.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記特
開平４−３６１０２２号公報に記載の代替鉄筋は、棒状
に固化したものであって、建設現場にて折り曲げるなど
の加工は不可能であり、作業性において問題がある。
又、特開平６−３３０５８７号公報に記載のコンクリー
ト補強筋においても、高張力繊維編組紐に含浸した接着
剤は固化されており、この補強筋を建設現場にて任意の
形状に折り曲げるなどの加工は不可能であって、作業性
において問題がある。However, the alternative reinforcing bar described in the above-mentioned Japanese Patent Application Laid-Open No. 4-361022 is solidified in the shape of a rod and cannot be bent at a construction site. There is a problem in sex.
Also in the concrete reinforcing bars described in JP-A-6-330587, the adhesive impregnated in the high-strength fiber braid is solidified, and the reinforcing bars are bent into an arbitrary shape at a construction site. Is impossible and there is a problem in workability.
【０００４】従って、本発明の目的は、建設現場にて任
意の形状に容易に折り曲げるなどの加工を施すことが可
能であり、作業性において優れ、例えばコンクリート補
強筋として使用可能な強化繊維補強筋、この補強筋を使
用したコンクリート構造物の補強方法及び強化繊維補強
筋の製造方法を提供することである。[0004] Accordingly, an object of the present invention is to make it possible to easily perform processing such as bending into an arbitrary shape at a construction site, and to provide excellent workability, for example, a reinforcing fiber reinforcement that can be used as a concrete reinforcement. It is another object of the present invention to provide a method for reinforcing a concrete structure and a method for manufacturing a reinforcing fiber reinforcing bar using the reinforcing bar.
【０００５】本発明の他の目的は、炭素繊維などの強化
繊維を使用し、軽量で、強度的に優れ、且つ変形自在で
あり、従って、現場での作業性に優れ、しかも耐候性、
及び酸、アルカリ、塩分に対する耐腐食性に優れ、例え
ばコンクリート補強筋として使用可能な強化繊維補強
筋、この補強筋を使用したコンクリート構造物の補強方
法及び強化繊維補強筋の製造方法を提供することであ
る。Another object of the present invention is to use a reinforcing fiber such as a carbon fiber, and to be lightweight, excellent in strength and deformable, so that it is excellent in workability in the field, and also has weather resistance,
To provide a reinforcing fiber reinforcing bar having excellent corrosion resistance to acids, alkalis, and salts, for example, usable as a concrete reinforcing bar, a method of reinforcing a concrete structure using the reinforcing bar, and a method of manufacturing the reinforcing fiber reinforcing bar. It is.
【０００６】[0006]
【課題を解決するための手段】上記目的は本発明に係る
強化繊維補強筋、この補強筋を使用したコンクリート構
造物の補強方法及び強化繊維補強筋の製造方法にて達成
される。要約すれば、本発明の第１の態様によると、多
数本の強化繊維を有する補強繊維束と、前記補強繊維束
の長手方向に沿って延在し、十分な空隙を有した態様で
前記補強繊維束を囲包して配置された可撓性の管状被覆
部材と、を有することを特徴とする強化繊維補強筋が提
供される。The above object is achieved by a reinforcing fiber reinforcing bar according to the present invention, a method of reinforcing a concrete structure using the reinforcing bar, and a method of manufacturing a reinforcing fiber reinforcing bar. In summary, according to a first aspect of the present invention, there is provided a reinforcing fiber bundle having a large number of reinforcing fibers and the reinforcing fiber extending in a longitudinal direction of the reinforcing fiber bundle and having a sufficient space. And a flexible tubular covering member disposed around the fiber bundle.
【０００７】又、本発明の第２の態様によると、多数本
の強化繊維を有する補強繊維束と、前記補強繊維束の長
手方向に沿って延在し、十分な空隙を有した態様で前記
補強繊維束を囲包して配置された可撓性の管状被覆部材
と、前記管状被覆部材の内部に注入され、前記補強繊維
束へと含浸された半硬化状態の樹脂と、を有することを
特徴とする可撓性の強化繊維補強筋が提供される。According to a second aspect of the present invention, there is provided a reinforcing fiber bundle having a large number of reinforcing fibers, and the reinforcing fiber bundle extending along the longitudinal direction of the reinforcing fiber bundle and having a sufficient gap. A flexible tubular covering member surrounding the reinforcing fiber bundle, and a semi-cured resin injected into the tubular covering member and impregnated into the reinforcing fiber bundle. A featured flexible reinforcing fiber reinforcement is provided.
【０００８】上記各本発明にて、一実施態様によると、
前記補強繊維束の強化繊維は、軸線方向に平行に或いは
螺旋状に捻って、又は、編み込むことによって前記管状
被。又、他の実施態様によると、前記管状被覆部材内
に、更に、撹拌部材が配置され、好ましくは、この撹拌
部材は、断面が十字形状とされ、軸線方向に螺旋状に捻
れているフィンプレートとされる。更に、他の実施態様
によると、前記管状被覆部材内に、更に、加熱部材が配
置され、好ましくは、この加熱部材は、ヒータ線であ
る。According to one embodiment of the present invention,
The reinforcing fibers of the reinforcing fiber bundle are twisted or braided in parallel or spirally in the axial direction to form the tubular sheath. According to another embodiment, a stirring member is further disposed in the tubular covering member, and preferably, the stirring member has a cross-shaped cross section and a fin plate twisted helically in the axial direction. It is said. According to yet another embodiment, a heating member is further arranged in the tubular covering member, preferably, the heating member is a heater wire.
【０００９】上記各本発明にて、前記管状被覆部材内の
容積をＶT 、この容積ＶT における前記補強繊維束の占
有容積をＶF とすると、前記管状被覆部材内の補強繊維
束の占有率（％）、即ち、（ＶF ÷ＶT ）×１００は、
５〜８０％とされる。In each of the present inventions, assuming that the volume in the tubular covering member is V T and the occupied volume of the reinforcing fiber bundle in this volume V T is V F , the occupancy of the reinforcing fiber bundle in the tubular covering member is V F. The rate (%), that is, (V F ÷ V T ) × 100 is
5 to 80%.
【００１０】本発明の第３の態様によると、上記各本発
明の強化繊維補強筋にて、更に、前記管状被覆部材の内
部に多数の細孔を有した内管が配置され、前記補強繊維
束は、前記管状被覆部材と前記内管とにて画成される環
状空間に配置される。この場合には、前記環状空間内の
容積をＶT 、この容積ＶT における前記補強繊維束の占
有容積をＶF とすると、前記環状空間内の補強繊維束の
占有率（％）、即ち、（ＶF ÷ＶT ）×１００は、５〜
８０％とされる。According to a third aspect of the present invention, in each of the reinforcing fiber reinforcing bars of the present invention, an inner pipe having a large number of pores is further arranged inside the tubular covering member. The bundle is disposed in an annular space defined by the tubular covering member and the inner tube. In this case, assuming that the volume in the annular space is V T and the volume occupied by the reinforcing fiber bundle in this volume V T is V F , the occupancy rate (%) of the reinforcing fiber bundle in the annular space, ie, (V F ÷ V T) × 100 is, 5
80%.
【００１１】好ましくは、前記強化繊維は、炭素繊維、
ガラス繊維、セラミックス繊維を含む無機繊維、アラミ
ド繊維、ポリエチレン繊維、ポリプロピレン繊維、ナイ
ロン繊維を含む有機繊維、又はチタン繊維、ステンレス
スチール繊維、鉄繊維を含む金属繊維を単独で、又は複
数種を混合して使用することができる。前記炭素繊維
は、強度が１００Ｋｇｆ／ｍｍ2 以上、弾性率が１０Ｔ
ｏｎｆ／ｍｍ2 以上であることが望ましく、又、前記有
機繊維も又、強度が１００Ｋｇｆ／ｍｍ2 以上、弾性率
が２Ｔｏｎｆ／ｍｍ2 以上であることが望ましい。Preferably, the reinforcing fibers are carbon fibers,
Glass fiber, inorganic fiber including ceramic fiber, aramid fiber, polyethylene fiber, polypropylene fiber, organic fiber including nylon fiber, or titanium fiber, stainless steel fiber, metal fiber including iron fiber alone or by mixing multiple types Can be used. The carbon fiber has a strength of 100 kgf / mm 2 or more and an elastic modulus of 10T.
onf / mm 2 or more, and the organic fiber also preferably has a strength of 100 kgf / mm 2 or more and an elastic modulus of 2 Tonf / mm 2 or more.
【００１２】本発明の一実施態様によると、前記可撓性
の管状被覆部材は、内径が２〜１００ｍｍ、肉厚が０．
０１〜５０ｍｍとされ、前記内管は、内径が１〜１００
ｍｍ、肉厚が０．０１〜５０ｍｍとされ、金属又は樹脂
材料で作製される。前記樹脂材料としては、ポリエチレ
ン、ポリプロピレン、ナイロン、塩化ビニール、ゴム系
樹脂などが好適に使用される。又、所望に応じて、前記
可撓性の管状被覆部材は、その外表面に凹凸形状が形成
される。According to one embodiment of the present invention, the flexible tubular covering member has an inner diameter of 2 to 100 mm and a wall thickness of 0.1 mm.
And the inner tube has an inner diameter of 1 to 100 mm.
mm and a thickness of 0.01 to 50 mm, and is made of a metal or resin material. As the resin material, polyethylene, polypropylene, nylon, vinyl chloride, rubber-based resin and the like are preferably used. Also, if desired, the flexible tubular covering member may have an uneven surface on its outer surface.
【００１３】上記構成とされる本発明の強化繊維補強筋
は、鉄筋コンクリート構造物を建設する際に、鉄筋の代
替物としてコンクリート中に埋設して使用することがで
きる。The reinforcing fiber reinforcing bar of the present invention having the above structure can be used by embedding it in concrete as a substitute for a reinforcing bar when constructing a reinforced concrete structure.
【００１４】つまり、本発明の他の態様によると、
（ａ）多数本の強化繊維を有する補強繊維束と、前記補
強繊維束の長手方向に沿って延在し、十分な空隙を有し
た態様で前記補強繊維束を囲包して配置された可撓性の
管状被覆部材と、を有する強化繊維補強筋を所定形状に
変形し、所定位置に取付ける工程、（ｂ）前記所定位置
に取付けられた強化繊維補強筋の前記管状被覆部材の内
部へと樹脂を注入し、前記管状被覆部材内の前記補強繊
維束に樹脂を含浸させる工程、（ｃ）前記強化繊維補強
筋の前記補強繊維束に含浸した樹脂を硬化する工程、を
備えたコンクリート構造物の補強方法が提供され、又、
本発明の更に他の態様によると、（ａ）多数本の強化繊
維を有する補強繊維束と、前記補強繊維束の長手方向に
沿って延在し、十分な空隙を有した態様で前記補強繊維
束を囲包して配置された可撓性の管状被覆部材と、前記
管状被覆部材の内部に注入され、前記補強繊維束へと含
浸された樹脂と、を有する可撓性の強化繊維補強筋を所
定形状に変形し、所定位置に取付ける工程、（ｂ）前記
強化繊維補強筋の前記補強繊維束に含浸した樹脂を硬化
する工程、を備えたコンクリート構造物の補強方法が提
供される。That is, according to another aspect of the present invention,
(A) a reinforcing fiber bundle having a large number of reinforcing fibers, and a reinforcing fiber bundle extending along the longitudinal direction of the reinforcing fiber bundle and surrounding the reinforcing fiber bundle in a mode having a sufficient space. Deforming a reinforcing fiber reinforcing bar having a flexible tubular covering member into a predetermined shape and attaching the reinforcing fiber reinforcing bar to a predetermined position; and (b) moving the reinforcing fiber reinforcing bar attached to the predetermined position into the tubular covering member. A concrete structure comprising: a step of injecting a resin to impregnate the reinforcing fiber bundle in the tubular covering member with the resin; and (c) a step of curing the resin impregnated in the reinforcing fiber bundle of the reinforcing fiber reinforcement. Is provided, and
According to still another aspect of the present invention, (a) a reinforcing fiber bundle having a large number of reinforcing fibers, and the reinforcing fiber extending in a longitudinal direction of the reinforcing fiber bundle and having a sufficient space. Flexible reinforcing fiber reinforcement having a flexible tubular covering member surrounding the bundle and a resin injected into the tubular covering member and impregnated into the reinforcing fiber bundle. The method for reinforcing a concrete structure comprises: a step of deforming the reinforcing fiber bundle of the reinforcing fiber bundle into a predetermined shape, and a step of curing the resin impregnated in the reinforcing fiber bundle of the reinforcing fiber reinforcing bar.
【００１５】本発明の他の態様によると、可撓性の管状
被覆部材内に、多数本の強化繊維を有する補強繊維束を
備えた強化繊維補強筋の前記管状被覆部材の一端から前
記管状被覆部材内へと樹脂を注入し、前記管状被覆部材
の他端から排気することを特徴とする補強繊維束に樹脂
が含浸された強化繊維補強筋の製造方法が提供され、
又、本発明の更に他の態様によると、可撓性の管状被覆
部材内に多数の細孔を有した内管が配置され、前記管状
被覆部材と前記内管とにて画成される環状空間に多数本
の強化繊維を有する補強繊維束を備えた強化繊維補強筋
の前記管状被覆部材の一端から前記管状被覆部材内へと
樹脂を注入し、前記内管の、前記樹脂注入端側とは反対
側の他端から排気することを特徴とする補強繊維束に樹
脂が含浸された強化繊維補強筋の製造方法が提供され、
更に、本発明の他の態様によると、可撓性の管状被覆部
材内に多数の細孔を有した内管が配置され、前記管状被
覆部材と前記内管とにて画成される環状空間に多数本の
強化繊維を有する補強繊維束を備えた強化繊維補強筋の
前記管状被覆部材の一端から排気し、前記内管の、前記
排気端側とは反対側の他端から前記内管内へと樹脂を注
入することを特徴とする補強繊維束に樹脂が含浸された
強化繊維補強筋の製造方法が提供される。これら本発明
にて、一実施態様によると、前記管状被覆部材の一端か
らの前記排気は、樹脂を前記内管内へと注入する前に行
うか、前記管状被覆部材の一端からの前記排気は、樹脂
を前記内管内へと注入しながら行うことができる。又、
必要に応じて、前記樹脂の注入及び前記排気は、前記強
化繊維補強筋の長手方向の複数箇所において行うことも
可能である。According to another aspect of the present invention, the tubular covering member is provided at one end of the tubular covering member of a reinforcing fiber reinforcement having a reinforcing fiber bundle having a large number of reinforcing fibers in a flexible tubular covering member. Injecting a resin into the member, a method for producing a reinforcing fiber reinforcing bar impregnated with resin in a reinforcing fiber bundle characterized by exhausting from the other end of the tubular covering member,
According to still another aspect of the present invention, an inner tube having a large number of pores is arranged in a flexible tubular covering member, and an annular shape is defined by the tubular covering member and the inner tube. A resin is injected into the tubular covering member from one end of the tubular covering member of the reinforcing fiber reinforcement having a reinforcing fiber bundle having a large number of reinforcing fibers in a space, and the resin injection end side of the inner pipe and A method for producing a reinforcing fiber reinforcing bar impregnated with a resin in a reinforcing fiber bundle characterized by exhausting from the other end on the opposite side is provided,
Further, according to another aspect of the present invention, an inner tube having a large number of pores is disposed in a flexible tubular covering member, and an annular space defined by the tubular covering member and the inner tube is provided. Exhausting from one end of the tubular covering member of the reinforcing fiber reinforcement having a reinforcing fiber bundle having a large number of reinforcing fibers into the inner pipe from the other end of the inner pipe opposite to the exhaust end side. And a method of manufacturing a reinforcing fiber reinforcement in which a reinforcing fiber bundle is impregnated with a resin. In the present invention, according to one embodiment, the exhaust from one end of the tubular covering member is performed before injecting a resin into the inner tube, or the exhaust from one end of the tubular covering member is This can be performed while injecting the resin into the inner tube. or,
If necessary, the injection of the resin and the exhaustion can be performed at a plurality of locations in the longitudinal direction of the reinforcing fiber reinforcement.
【００１６】[0016]
【発明の実施の形態】以下、本発明に係る強化繊維補強
筋、この補強筋を使用したコンクリート構造物の補強方
法及び強化繊維補強筋の製造方法を図面に則して更に詳
しく説明する。以下に説明する各実施例にて強化繊維補
強筋は、鉄筋の代替物としてコンクリート構造物の補強
に使用されるコンクリート補強筋として説明するが、本
発明はこれに限定されるものではない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The reinforcing fiber reinforcement according to the present invention, a method for reinforcing a concrete structure using the reinforcement, and a method for manufacturing the reinforcing fiber reinforcement will be described in more detail with reference to the drawings. In each of the embodiments described below, the reinforcing fiber reinforcement is described as a concrete reinforcement used for reinforcing a concrete structure as an alternative to a reinforcing bar, but the present invention is not limited to this.
【００１７】実施例１ 図１に、本発明の強化繊維補強筋の一実施例を示す。本
実施例にて、所謂、コンクリート補強筋１は、多数本の
強化繊維ｆを有する補強繊維束２と、この補強繊維束２
を囲包して配置された可撓性の管状被覆部材４と、を有
する。つまり、可撓性の管状被覆部材４は、その中心穴
６を貫通して補強繊維束が延在して配置され、管状被覆
部材４と補強繊維束２との間には、詳しくは後で説明す
るように、樹脂が注入されるに十分な空隙が保持されて
いる。即ち、長さＬにおける管状被覆部材４の中心穴６
の容積をＶT 、この容積ＶT における補強繊維束２が占
める容積（体積）をＶF とすると、管状被覆部材４内に
おける補強繊維束２の占有率（％）は、（ＶF ÷ＶT ）
×１００で示すことができ、好ましくは、５〜８０％と
される。補強繊維束２の占有率が５％より少ないと、樹
脂を多量に必要とする、更には、樹脂注入時に管内に空
気が残留する、といった問題があり、又、８０％より大
きいと、樹脂の注入時に過大な圧力を要する、又、繊維
束内に十分に樹脂が含浸しない、といった問題が発生す
る。Embodiment 1 FIG. 1 shows an embodiment of a reinforcing fiber reinforcing bar of the present invention. In this embodiment, a so-called concrete reinforcing bar 1 includes a reinforcing fiber bundle 2 having a large number of reinforcing fibers f, and a reinforcing fiber bundle 2 having a plurality of reinforcing fibers f.
And a flexible tubular covering member 4 which is arranged so as to surround the above. In other words, the flexible tubular covering member 4 is arranged such that the reinforcing fiber bundle extends through the center hole 6 thereof, and between the tubular covering member 4 and the reinforcing fiber bundle 2, As described, a sufficient space is maintained for injecting the resin. That is, the center hole 6 of the tubular covering member 4 at the length L
Volume of V T of the reinforcing fiber bundle 2 occupied volume in this volume V T (volume) and V F, the occupancy of the reinforcing fiber bundles 2 in the tubular cover member 4 (%) is, (V F ÷ V T )
× 100, and preferably 5 to 80%. If the occupation ratio of the reinforcing fiber bundle 2 is less than 5%, a large amount of resin is required, and further, air remains in the pipe at the time of injecting the resin. A problem arises in that an excessive pressure is required at the time of injection and that the resin is not sufficiently impregnated in the fiber bundle.
【００１８】補強繊維束２は、一般には、強化繊維ｆを
平行状態に配列して作製される。すなわち、所定本数の
強化繊維ｆを平行に或いは緩く撚りを掛けて収束して作
製されるストランド（強化繊維束）を更に平行に或いは
緩く撚りを掛けて複数本束ねることによって作製され
る。又、別法として、補強繊維束２は、例えば、図２
（Ａ）、（Ｂ）に示すように、平行状態に配列された強
化繊維ｆ或いは強化繊維束を、同質或は異質の繊維で作
製された編組体３Ａにて被覆して強化繊維束を緩く拘束
して作製することができ、更には、図２（Ｃ）に示すよ
うに、平行状態に配列された強化繊維ｆ或いは強化繊維
束を、同質或は異質の繊維或はテープ３Ｂで緩く拘束し
て作製することも可能である。The reinforcing fiber bundle 2 is generally produced by arranging reinforcing fibers f in a parallel state. That is, it is produced by bundling a plurality of strands (reinforcement fiber bundles) produced by converging a predetermined number of reinforcing fibers f in parallel or loosely by twisting them further in parallel or loosely. Alternatively, the reinforcing fiber bundle 2 is, for example, as shown in FIG.
As shown in (A) and (B), a reinforcing fiber f or a reinforcing fiber bundle arranged in a parallel state is covered with a braided body 3A made of the same or different fibers to loosen the reinforcing fiber bundle. As shown in FIG. 2 (C), the reinforcing fibers f or the reinforcing fiber bundles arranged in a parallel state are loosely restrained by homogeneous or heterogeneous fibers or tapes 3B. It is also possible to manufacture it.
【００１９】補強繊維束２は、上述のように、一般に
は、そのストランド（強化繊維束）を平行に或いは緩く
撚りを掛けて複数本束ねることによって作製されるが、
積極的に軸線方向に螺旋状に捻りを掛けて作製するこ
と、更には編み込むことも可能である。この場合には、
後で説明するように、樹脂を補強繊維束２内へと含浸す
る際に管状被覆部材４内にて軸線方向一端から他端へと
流動する樹脂を旋回させることができ、補強繊維束２内
への樹脂の有効な含浸を可能とする。As described above, the reinforcing fiber bundle 2 is generally produced by bundling a plurality of strands (reinforcing fiber bundles) in parallel or loosely by twisting them.
It is also possible to make a spiral twist in the axial direction positively, and even to knit. In this case,
As described later, when the resin is impregnated into the reinforcing fiber bundle 2, the resin flowing from one end in the axial direction to the other end in the tubular covering member 4 can be swirled. Enables effective impregnation of the resin.
【００２０】強化繊維ｆとしては、炭素繊維、ガラス繊
維、セラミックス繊維を含む無機繊維、アラミド繊維、
ポリエチレン繊維、ポリプロピレン繊維、ナイロン繊維
を含む有機繊維、又はチタン繊維、ステンレススチール
繊維、鉄繊維を含む金属繊維を単独で、又は複数種を混
合して使用することができる。各種物性の繊維を混合し
て用いることにより、各繊維の特徴が引張応力の各レベ
ルで発揮され良好な変形性能を得ることができる。例え
ばアラミド繊維などの破断延びが大きい繊維と、炭素繊
維などの弾性率が大きい繊維を混合すると、初期弾性が
高く且つ破断延びの大きい複合体ができる。As the reinforcing fibers f, carbon fibers, glass fibers, inorganic fibers including ceramic fibers, aramid fibers,
Organic fibers including polyethylene fibers, polypropylene fibers, and nylon fibers, or metal fibers including titanium fibers, stainless steel fibers, and iron fibers can be used alone or in combination of two or more. By mixing and using fibers of various physical properties, the characteristics of each fiber are exhibited at each level of tensile stress, and good deformation performance can be obtained. For example, when a fiber having a large elongation at break such as aramid fiber and a fiber having a large elastic modulus such as a carbon fiber are mixed, a composite having a high initial elasticity and a large elongation at break is obtained.
【００２１】通常、コンクリート構造物のための補強筋
１としては、炭素繊維が好適に使用され、ＰＡＮ系、ピ
ッチ系、その他、いずれのタイプの炭素繊維であっても
構わない。好ましくは、強度が１００Ｋｇｆ／ｍｍ2 以
上、弾性率が１０Ｔｏｎｆ／ｍｍ2 以上とされる高強
度、高弾性の炭素繊維が使用される。有機繊維が使用さ
れる場合には、この有機繊維は、強度が１００Ｋｇｆ／
ｍｍ2 以上、弾性率が２Ｔｏｎｆ／ｍｍ2 以上であるの
が好ましい。Normally, carbon fibers are suitably used as the reinforcing bars 1 for concrete structures, and any type of carbon fibers, such as PAN-based, pitch-based, etc., may be used. Preferably, a high-strength, high-elasticity carbon fiber having a strength of 100 kgf / mm 2 or more and an elastic modulus of 10 Tonf / mm 2 or more is used. When organic fibers are used, the organic fibers have a strength of 100 kgf /
mm 2 or more, and the elastic modulus is preferably 2 Tonf / mm 2 or more.
【００２２】一方、前記可撓性の管状被覆部材４は、用
途によって種々の材料及びサイズのものとすることがで
き、一般に、中心穴６の内径が２〜１００ｍｍ、肉厚は
０．０１ｍｍ〜５０ｍｍとされ、金属製とすることもで
きるが、樹脂材料で作製するのが好適である。好ましい
樹脂材料としては、ポリエチレン、ポリプロピレン、ナ
イロン、塩化ビニール、ゴム系樹脂などを挙げることが
できる。本発明によれば、強化繊維ｆの回りに管状被覆
部材４を設ける構成とされるので、本発明のコンクリー
ト補強筋をコンクリート中に埋設した場合に、強化繊維
ｆがコンクリート中のアルカリ成分、さらには酸、塩分
などにより腐食されるのを防止することができる。又、
コンクリート補強筋１を、一部が、或は全体が外部に露
出するようにして使用した場合であっても、管状被覆部
材４に紫外線カットのための着色を施すなどの手段によ
り内部の強化繊維ｆの劣化を防止し、耐候性を向上させ
ることができる。On the other hand, the flexible tubular covering member 4 can be made of various materials and sizes depending on the application. Generally, the inner diameter of the center hole 6 is 2 to 100 mm, and the thickness is 0.01 mm to It is 50 mm and can be made of metal, but is preferably made of a resin material. Preferred resin materials include polyethylene, polypropylene, nylon, vinyl chloride, and rubber-based resins. According to the present invention, since the tubular covering member 4 is provided around the reinforcing fiber f, when the concrete reinforcing bar of the present invention is buried in concrete, the reinforcing fiber f becomes an alkaline component in the concrete, and furthermore, Can be prevented from being corroded by acids, salts and the like. or,
Even when the concrete reinforcing bar 1 is used so as to be partially or wholly exposed to the outside, the reinforcing fiber inside the tubular covering member 4 is colored by means such as coloring for cutting off ultraviolet rays. f can be prevented from deteriorating, and the weather resistance can be improved.
【００２３】更に、本発明のコンクリート補強筋１をコ
ンクリート中に埋設した場合に、補強筋１とコンクリー
トとの付着力を増大させるために、管状被覆部材４の外
表面には凹凸形状を設けるのが好ましい。凹凸形状とし
ては、例えば、図３（Ａ）に示すように、所定間隔で環
状の突起（ふし）８を形成することができ、又、図３
（Ｂ）に示すように、螺旋状に突起（ふし）８を形成し
ても良い。凹凸形状は、これらに限定されるものではな
く、任意の形状とすることができる。又、管状被覆部材
４の内径部は、図３（Ａ）に示すように、より大きな内
径部を有するように形成しても良く、図３（Ｂ）に示す
ように、一定の内径としても良い。Further, when the concrete reinforcing bar 1 of the present invention is buried in concrete, the outer surface of the tubular covering member 4 is provided with irregularities in order to increase the adhesive force between the reinforcing bar 1 and the concrete. Is preferred. As the uneven shape, for example, as shown in FIG. 3A, annular projections 8 can be formed at predetermined intervals.
As shown in (B), the projections 8 may be formed spirally. The concavo-convex shape is not limited to these, and may be any shape. Further, the inner diameter portion of the tubular covering member 4 may be formed so as to have a larger inner diameter portion as shown in FIG. 3 (A), and may have a constant inner diameter as shown in FIG. 3 (B). good.
【００２４】上記構成のコンクリート補強筋１は、例え
ば電線製造業界にてポリエチレン被覆電線を製造するの
に使用されているクロスヘッドを使用して好適に製造す
ることができる。つまり、クロスヘッドに対して芯材と
して補強繊維束２を送給し、この芯材としての補強繊維
束２の回りに押出し機にて溶融された被覆部材用樹脂を
導入し、管状被覆部材４を形成することができる。The concrete reinforcing bar 1 having the above-described structure can be suitably manufactured by using, for example, a crosshead used for manufacturing a polyethylene-coated electric wire in the electric wire manufacturing industry. That is, the reinforcing fiber bundle 2 is fed as a core material to the crosshead, and the resin for the coating member melted by the extruder is introduced around the reinforcing fiber bundle 2 as the core material, and the tubular coating member 4 is formed. Can be formed.
【００２５】実施例２ 次に、実施例１にて説明したコンクリート補強筋１を、
コンクリート構造物に使用する補強方法について説明す
る。Example 2 Next, the concrete reinforcing bar 1 described in Example 1 was used.
A reinforcing method used for a concrete structure will be described.
【００２６】実施例１にて説明した構成の本発明のコン
クリート補強筋１は、例えば、コンクリート構造物の横
方向鉄筋として好適に使用することができる。つまり、
コンクリート補強筋１は、図４に示すように、軸方向鉄
筋１０を取り巻いて配置される帯鉄筋１Ａとして、更に
は、中間帯鉄筋１Ｂとして使用することができる。The concrete reinforcing bar 1 of the present invention having the configuration described in the first embodiment can be suitably used, for example, as a lateral reinforcing bar of a concrete structure. That is,
As shown in FIG. 4, the concrete reinforcing bar 1 can be used as a band reinforcing bar 1A disposed around the axial reinforcing bar 10, and further, as an intermediate reinforcing bar 1B.
【００２７】図１に示す、未だ樹脂が含浸されていない
本発明のコンクリート補強筋１は、可撓性に優れてお
り、現場にて任意の形状に変形することができる。又、
変形した後は、元の形状に戻ることはなく、変形した形
態を保持することができる。勿論、必要に応じて、針金
で縛るなどの簡易な固定方法を併用することもできる。The concrete reinforcing bar 1 of the present invention shown in FIG. 1, which has not yet been impregnated with a resin, has excellent flexibility and can be deformed into an arbitrary shape on site. or,
After the deformation, the shape does not return to the original shape, and the deformed form can be maintained. Of course, if necessary, a simple fixing method such as binding with a wire can also be used.
【００２８】従って、本発明に従ったコンクリート構造
物の補強方法によれば、樹脂未含浸のコンクリート補強
筋１は、現場にて所望寸法に切断し、所定形状に変形す
ることができ、例えば、図４に示すように、帯鉄筋１Ａ
として、又中間鉄筋１Ｂとして軸方向鉄筋１０などに、
例えば両端部を所定角度に折り曲げ、他の鉄筋などにフ
ック止めすることにより取付けられる。上述のように、
必要に応じて、このフック止め部などを更に針金で縛る
こともできる。本発明のコンクリート補強筋１の補強繊
維束２は、図１及び図４に図示するように、補強筋の少
なくとも注入側側端部より、例えばＬ1 ＝１〜１０ｃｍ
程度突出しているのが好ましい。この点については後述
する。Therefore, according to the method for reinforcing a concrete structure according to the present invention, the concrete reinforcing bar 1 not impregnated with resin can be cut at a site to a desired size and deformed into a predetermined shape. As shown in FIG.
As the intermediate reinforcing bar 1B, such as the axial reinforcing bar 10,
For example, it is attached by bending both ends at a predetermined angle and hooking it to another reinforcing bar or the like. As mentioned above,
If necessary, the hook stopper and the like can be further tied with a wire. As shown in FIGS. 1 and 4, the reinforcing fiber bundle 2 of the concrete reinforcing bar 1 of the present invention is, for example, L 1 = 1 to 10 cm from at least the injection side end of the reinforcing bar.
It is preferable that they protrude to the extent. This will be described later.
【００２９】帯鉄筋１Ａ及び中間鉄筋１Ｂの軸方向鉄筋
１０に対する取付け方法は、図４に示す態様に限定され
るものではなく、例えば、図５に示すように、中間鉄筋
１Ｂは、対向する複数の軸方向鉄筋１０を交互にジグザ
グ状に連続して張設することもでき、又、図６に示すよ
うに、帯鉄筋１Ａは、複数の軸方向鉄筋１０の外周を取
り囲んで連続的に螺旋状に巻き付けることも可能であ
る。The method of attaching the band reinforcing bar 1A and the intermediate reinforcing bar 1B to the axial reinforcing bar 10 is not limited to the embodiment shown in FIG. 4, and for example, as shown in FIG. Can be continuously stretched alternately in a zigzag shape, and as shown in FIG. 6, the strip reinforcing bar 1A continuously surrounds the outer periphery of the plurality of axial reinforcing bars 10 and continuously spirals. It is also possible to wind in a shape.
【００３０】次に、コンクリート補強筋１の管状被覆部
材４内へと樹脂が注入され、管状被覆部材４中の補強繊
維束２に樹脂が含浸される。使用する樹脂としては、常
温硬化型或は熱硬化型のエポキシ系樹脂、又は、ビニル
エステル樹脂、ＭＭＡ樹脂、不飽和ポリエステル樹脂、
ウレタン系樹脂などのラジカル反応系樹脂とされる。Next, a resin is injected into the tubular covering member 4 of the concrete reinforcing bar 1, and the reinforcing fiber bundle 2 in the tubular covering member 4 is impregnated with the resin. As the resin to be used, a room temperature curing type or thermosetting type epoxy resin, or a vinyl ester resin, an MMA resin, an unsaturated polyester resin,
Radical reaction resins such as urethane resins.
【００３１】管状被覆部材４内へと樹脂を注入する方法
としては種々の方法が考えられるが、その一実施例を示
すと、例えば、図７に示すように、注入器２０を使用す
ることができる。本実施例にて、注入器２０は、大径穴
２１Ａと小径穴２１Ｂを備えた段付き弾性チューブ２１
を有し、その大径穴２１Ａ側端を管状被覆部材４の外周
に取付具２２にて固定する。補強繊維束２の突出端部２
Ａを弾性チューブ２１の小径穴２１Ｂを貫通して取り出
し、取付具２３にて弾性チューブ２１の外周を締め付け
る。これによって補強繊維束端部２Ａは注入器２０に固
定される。この後、弾性チューブ２１に形成された樹脂
注入口２１Ｃより注入器２０内へと樹脂Ｒを供給する。
これにより、樹脂Ｒは、管状被覆部材４の一端から内部
へと注入され、そして他方の端部へと流動する過程にお
いて補強繊維束２内へと含浸される。Various methods are conceivable as a method of injecting the resin into the tubular covering member 4. In one embodiment, for example, as shown in FIG. it can. In this embodiment, the injector 20 is a stepped elastic tube 21 having a large-diameter hole 21A and a small-diameter hole 21B.
The end of the large-diameter hole 21 </ b> A side is fixed to the outer periphery of the tubular covering member 4 by the fixture 22. Projection end 2 of reinforcing fiber bundle 2
A is taken out through the small-diameter hole 21 </ b> B of the elastic tube 21, and the outer periphery of the elastic tube 21 is fastened by the fixture 23. Thereby, the reinforcing fiber bundle end 2A is fixed to the injector 20. Thereafter, the resin R is supplied into the injector 20 from the resin injection port 21C formed in the elastic tube 21.
Thereby, the resin R is injected into the inside from one end of the tubular covering member 4, and is impregnated into the reinforcing fiber bundle 2 in the process of flowing to the other end.
【００３２】このとき、補強繊維束２の他方の端部２Ｂ
側に、管状被覆部材４の外周に密着適合する取付具３１
を備えた排気器３０を固定し、その接続管３２を真空ポ
ンプのような真空源に接続し、上記注入器２０を使用し
て管状被覆部材４内へと樹脂Ｒを注入するに先立って、
真空ポンプにて管状被覆部材４内を真空引きし、補強繊
維束２内の空気を除去しておくことができる。更には、
必要に応じて、樹脂注入中も真空ポンプを継続作動させ
て補強繊維束２内の空気を除去し、補強繊維束２内への
樹脂Ｒの含浸を効率よく行なうことができる。At this time, the other end 2B of the reinforcing fiber bundle 2
On the side, a fitting 31 that fits closely to the outer periphery of the tubular covering member 4
Is fixed, the connecting pipe 32 is connected to a vacuum source such as a vacuum pump, and prior to injecting the resin R into the tubular covering member 4 using the injector 20,
The inside of the tubular covering member 4 is evacuated by a vacuum pump to remove air in the reinforcing fiber bundle 2. Furthermore,
If necessary, the vacuum pump is continuously operated even during the injection of the resin to remove the air in the reinforcing fiber bundle 2 and the resin R can be impregnated into the reinforcing fiber bundle 2 efficiently.
【００３３】実施例３ 実施例２で説明したコンクリート構造物の横方向鉄筋
（帯鉄筋及び中間帯鉄筋）として使用するべく、本発明
に従ったコンクリート補強筋１をクロスヘッドを用いて
種々の寸法形状にて作製した。その一例を示せば、次の
とおりである。図１を参照して、 Ａ．管状被覆部材 材質： 塩化ビニール 外径（Ｄ1 ）： ２０ｍｍ 内径（Ｄ2 ）： １０ｍｍ 長さ（Ｌ1 ）：（１）２０ｍ（帯鉄筋用）、（２）４０
ｍ（中間帯鉄筋用） Ｂ．補強繊維束 材質：ＰＡＮ系炭素繊維２４０００本からなる繊維束
（ストランド）を８５本一方向に平行に配列して補強繊
維束を形成した。 炭素繊維の強 度：４９０Ｋｇｆ／ｍｍ2 弾性率： ２４Ｔｏｎｆ／ｍｍ2 両端部の突出長さ（Ｌ2 ）： ２０ｍｍExample 3 A concrete reinforcing bar 1 according to the present invention is used in various sizes by using a crosshead so as to be used as a lateral reinforcing bar (band reinforcing bar and intermediate reinforcing bar) of the concrete structure described in Example 2. It was produced in the shape. An example is as follows. Referring to FIG. Tubular covering member Material: Vinyl chloride Outer diameter (D 1 ): 20 mm Inner diameter (D 2 ): 10 mm Length (L 1 ): (1) 20 m (for band rebar), (2) 40
m (for intermediate band rebar) B. Reinforcing fiber bundle Material: 85 fiber bundles (strands) each composed of 24000 PAN-based carbon fibers were arranged in parallel in one direction to form a reinforcing fiber bundle. Strength of carbon fiber: 490 kgf / mm 2 Elastic modulus: 24 Tonf / mm 2 Projection length (L 2 ) at both ends: 20 mm
【００３４】このコンクリート補強筋１の管状被覆部材
４内における補強繊維束の占有率（％）は、５０％であ
った。The occupancy rate (%) of the reinforcing fiber bundle in the tubular covering member 4 of the concrete reinforcing bar 1 was 50%.
【００３５】次いで、図４〜図６に示すように、帯鉄筋
１Ａ及び中間鉄筋１Ｂとして軸方向鉄筋１０などに取付
けた。コンクリート補強筋１は、容易に変形することが
でき、作業性は極めて良好であった。Next, as shown in FIGS. 4 to 6, the belt reinforcing bar 1A and the intermediate reinforcing bar 1B were attached to the axial reinforcing bar 10 and the like. The concrete reinforcement 1 could be easily deformed, and the workability was extremely good.
【００３６】次いで、図７に示すような注入器２０を用
いてコンクリート補強筋１の管状被覆部材４内へと樹脂
Ｒを注入した。樹脂Ｒとしては、常温硬化型のエポキシ
系樹脂を使用した。この樹脂Ｒの粘度は３Ｐであった
が、極めて良好に管状被覆部材４の一端から内部へと注
入され、そして他方の端部へと流動する過程において補
強繊維束２内へと含浸された。Next, the resin R was injected into the tubular covering member 4 of the concrete reinforcing bar 1 using an injector 20 as shown in FIG. As the resin R, a cold-setting epoxy resin was used. Although the viscosity of this resin R was 3P, it was very well injected from one end of the tubular covering member 4 into the inside, and was impregnated into the reinforcing fiber bundle 2 while flowing to the other end.
【００３７】このようにして建造したコンクリート構造
物に対して試験を行なったが、極めて良好な結果を得る
ことができた。A test was conducted on the concrete structure thus constructed, and extremely good results were obtained.
【００３８】実施例４ 上記実施例１〜３においては、本発明のコンクリート補
強筋１は、複数本の強化繊維ｆを有する補強繊維束２
と、前記補強繊維束２の長手方向に沿って延在し、十分
な空隙を有した態様で前記補強繊維束２を囲包して配置
された可撓性の管状被覆部材４と、を有するものとして
説明したが、更に、このコンクリート補強筋１の前記管
状被覆部材４の内部に予め樹脂を注入し、この樹脂を前
記補強繊維束２へと含浸しておくことも可能である。但
し、この実施例のコンクリート補強筋１は、建設現場に
おいて、所定の形状に変形可能とするために、補強繊維
束２へと含浸された樹脂は、完全に硬化させることな
く、半硬化状態に保持する必要がある。Embodiment 4 In Embodiments 1 to 3 described above, the concrete reinforcing bar 1 of the present invention comprises a reinforcing fiber bundle 2 having a plurality of reinforcing fibers f.
And a flexible tubular covering member 4 which extends along the longitudinal direction of the reinforcing fiber bundle 2 and is arranged so as to surround the reinforcing fiber bundle 2 in a manner having a sufficient space. Although described above, it is also possible to inject a resin in advance into the tubular covering member 4 of the concrete reinforcing bar 1 and to impregnate the reinforcing fiber bundle 2 with the resin. However, in order to make the concrete reinforcing bar 1 of this embodiment deformable into a predetermined shape at the construction site, the resin impregnated into the reinforcing fiber bundle 2 is not completely cured, but is in a semi-cured state. Need to be retained.
【００３９】本実施例においても、実施例１にて説明し
たと同じ理由から、樹脂注入前における前記管状被覆部
材４内の補強繊維束の占有率（％）、即ち、（補強繊維
束２の占有容積ＶF ／管状被覆部材４内の容積ＶT ）×
１００は、５〜８０％とされる。Also in this embodiment, for the same reason as described in the first embodiment, the occupation ratio (%) of the reinforcing fiber bundle in the tubular covering member 4 before injecting the resin, ie, (% of the reinforcing fiber bundle 2) Occupied volume V F / volume V T in tubular covering member 4) ×
100 is 5 to 80%.
【００４０】本実施例にて使用される管状の被覆部材
４、強化繊維ｆ、含浸樹脂などは先の実施例１〜３で説
明したと同じものを使用することができ、同様に構成す
ることができる。The tubular covering member 4, reinforcing fiber f, impregnated resin, and the like used in this embodiment can be the same as those described in the first to third embodiments. Can be.
【００４１】本実施例のコンクリート補強筋１を使用し
た場合においても、既に補強筋１内に樹脂が含浸されて
はいるが、この樹脂は未だ完全には硬化されていない半
硬化状態にあるために、帯鉄筋及び中間鉄筋として軸方
向鉄筋に取付ける作業は極めて容易に達成することがで
きる。実際に、本実施例のコンクリート補強筋１を、実
施例３で説明したと同様にして作製し、更に樹脂を注入
含浸させ、その後コンクリート構造物の補強に使用した
が、容易に変形することができ、作業性は極めて良好で
あった。Even when the concrete reinforcing bar 1 of this embodiment is used, although the resin has already been impregnated in the reinforcing bar 1, this resin is in a semi-cured state which has not been completely cured yet. In addition, the work of attaching to the axial reinforcing bar as the band reinforcing bar and the intermediate reinforcing bar can be achieved very easily. Actually, the concrete reinforcing bar 1 of this example was prepared in the same manner as described in Example 3, and was further impregnated with a resin and then used for reinforcing a concrete structure. The workability was extremely good.
【００４２】又、上述からも理解されるように、本実施
例のコンクリート補強筋１は、既に補強筋１内に樹脂が
含浸されているために、建設現場での樹脂注入作業は省
略されるか、或は、鉄筋構造体（鉄筋籠）などに組み付
ける前に行なうことができ、作業効率の点では優れてい
る。As will be understood from the above description, the concrete reinforcing bar 1 of the present embodiment has already been impregnated with the resin, so that the resin injection work at the construction site is omitted. Alternatively, it can be performed before assembling to a reinforcing bar structure (reinforcing cage) or the like, which is excellent in terms of work efficiency.
【００４３】実施例５ 上記実施例にて説明したコンクリート補強筋１内に含浸
された樹脂は、放置することにより硬化するが、積極的
にヒータ等にて加熱することによりその硬化を促進する
ことができる。Embodiment 5 The resin impregnated in the concrete reinforcing bar 1 described in the above embodiment is hardened by leaving it, but the hardening is accelerated by actively heating with a heater or the like. Can be.
【００４４】本実施例によると、コンクリート補強筋１
は、図８及び図９に示すように、所定本数の強化繊維ｆ
を収束したストランド（強化繊維束）Ｓを複数本束ねて
構成される補強繊維束２の、好ましくは略中心位置に加
熱部材、例えばヒータ線Ｈが配置される。According to this embodiment, the concrete reinforcing bar 1
As shown in FIGS. 8 and 9, a predetermined number of reinforcing fibers f
A heating member, for example, a heater wire H is disposed at a substantially center position of the reinforcing fiber bundle 2 formed by bundling a plurality of strands (reinforcing fiber bundles) S that converge.
【００４５】このような構成の補強筋１を使用した場合
には、ヒータ線Ｈの両端に電源１００を接続し、電源１
００からヒータ線Ｈに給電することにより、ヒータ線Ｈ
を発熱させ、補強筋１内の樹脂Ｒを迅速に加熱硬化する
ことができる。ヒータ線Ｈとしては、例えばニクロム
線、タングステン線、ニッケル線などが使用可能であ
り、線径０．１〜２０ｍｍの可撓性のあるものが好適で
ある。もし、補強繊維束２を構成するストランドＳが炭
素繊維とされるのであれば、炭素繊維自体をヒータ線Ｈ
として使用することができる。When the reinforcing bar 1 having such a configuration is used, the power supply 100 is connected to both ends of the heater wire H, and the power supply 1
By supplying power to the heater wire H from 00, the heater wire H
And the resin R in the reinforcing bar 1 can be quickly heated and cured. As the heater wire H, for example, a nichrome wire, a tungsten wire, a nickel wire, or the like can be used, and a flexible wire having a wire diameter of 0.1 to 20 mm is preferable. If the strand S constituting the reinforcing fiber bundle 2 is made of carbon fiber, the carbon fiber itself is connected to the heater wire H
Can be used as
【００４６】実施例６ 次に、本発明の補強筋１における管状被覆部材４内への
樹脂の注入方法について説明する。以下に説明する実施
例の樹脂注入方法は、補強筋１を鉄筋構造体に組み付け
る前、或いは後のいずれにおいても実施することができ
る。Embodiment 6 Next, a method of injecting a resin into the tubular covering member 4 of the reinforcing bar 1 of the present invention will be described. The resin injection method of the embodiment described below can be performed before or after the reinforcing bar 1 is assembled to the reinforcing bar structure.
【００４７】本実施例によると、図１０に示すように、
補強筋１の管状被覆部材４の長手方向に沿って、複数箇
所に注入器２０と、排気器３０とが配置される。本実施
例にて、注入器２０は、所定の間隔にて、管状被覆部材
４の外周に取付け具２２にて固定される。各注入器２０
は、管状被覆部材４の壁を貫通して穿設された供給透孔
４１と連通しており、又、各注入器２０は、樹脂注入パ
イプ２５にて互いに連結され、樹脂注入パイプ２５の一
端に接続された樹脂供給ポンプ２６により、樹脂Ｒが供
給可能とされる。According to this embodiment, as shown in FIG.
The injector 20 and the exhaust unit 30 are arranged at a plurality of locations along the longitudinal direction of the tubular covering member 4 of the reinforcing bar 1. In the present embodiment, the injector 20 is fixed to the outer periphery of the tubular covering member 4 with a fixture 22 at a predetermined interval. Each injector 20
Communicates with a supply through hole 41 drilled through the wall of the tubular covering member 4, and each injector 20 is connected to each other by a resin injection pipe 25, and one end of the resin injection pipe 25 The resin R can be supplied by the resin supply pump 26 connected to the.
【００４８】一方、管状被覆部材４の外周には、排気器
３０が所定の間隔にて取付具３１により固定され、各排
気器３０の接続管３２が排気パイプ３３に連結されてい
る。排気パイプ３３は、真空ポンプ３４のような真空源
に接続されている。各排気器３０は、注射針のような排
気ノズル３５にて管状被覆部材４の壁を貫通して管状被
覆部材４内へと連通しており、真空ポンプ３４を作動さ
せることにより、管状被覆部材４内を排気することがで
きる。On the other hand, on the outer periphery of the tubular covering member 4, exhaust units 30 are fixed at predetermined intervals by a fixture 31, and a connection pipe 32 of each exhaust unit 30 is connected to an exhaust pipe 33. The exhaust pipe 33 is connected to a vacuum source such as a vacuum pump. Each exhaust device 30 communicates with the inside of the tubular covering member 4 through the wall of the tubular covering member 4 with an exhaust nozzle 35 such as an injection needle, and by operating the vacuum pump 34, the tubular covering member 4 can be evacuated.
【００４９】本実施例においても、実施例２にて説明し
たと同様に、上記注入器２０を使用して管状被覆部材４
内へと複数箇所から樹脂Ｒを注入するに先立って、真空
ポンプ３４にて管状被覆部材４内を真空引きし、補強繊
維束２内の空気を除去しておくことができる。更には、
必要に応じて、樹脂注入中も真空ポンプ３４を継続作動
させて補強繊維束２内の空気を除去し、補強繊維束２内
への樹脂Ｒの含浸を効率よく行なうことができる。In this embodiment, as described in Embodiment 2, the tubular covering member 4 is formed using the injector 20.
Prior to injecting the resin R into the inside from a plurality of locations, the inside of the tubular covering member 4 can be evacuated by the vacuum pump 34 to remove air in the reinforcing fiber bundle 2. Furthermore,
If necessary, the vacuum pump 34 is continuously operated even during the resin injection to remove the air in the reinforcing fiber bundle 2 and the resin R can be impregnated into the reinforcing fiber bundle 2 efficiently.
【００５０】又、本実施例による樹脂含浸作業は、補強
筋１を設置した後に、補強筋１の上部などの空気が溜ま
りやすい箇所に、注入器２０及び排気器３０を設置し、
実施することも可能である。Further, in the resin impregnation operation according to the present embodiment, after the reinforcing bars 1 are installed, the injector 20 and the exhaust unit 30 are installed in a place where air easily accumulates, such as above the reinforcing bars 1,
It is also possible to carry out.
【００５１】更には、複数の注入器２０を使用して樹脂
充填作業を行い、ある程度の樹脂含浸作業を行った後
に、実際に空気が溜まっているところに排気器３０を設
置し、その部分の空気を除去し、そして樹脂含浸を行う
こともできる。Further, a resin filling operation is performed using a plurality of injectors 20, and after performing a certain amount of resin impregnation operation, an exhaust device 30 is installed in a place where air is actually stored, and a portion of the exhaust device 30 is installed. The air can be removed and a resin impregnation can be performed.
【００５２】本実施例の樹脂注入方法を採用すると、樹
脂注入時間を短縮し得るという利点もある。The use of the resin injection method of the present embodiment also has the advantage that the resin injection time can be reduced.
【００５３】実施例７ 本発明の強化繊維補強筋１は、図１１に示すように、管
状被覆部材４の内部に撹拌部材１１を軸線方向に沿って
配置することもできる。Embodiment 7 In the reinforcing fiber reinforcing bar 1 of the present invention, as shown in FIG. 11, a stirring member 11 can be arranged inside a tubular covering member 4 along an axial direction.
【００５４】つまり、本実施例によれば、撹拌部材１１
として、断面形状が十字形状とされるフィンプレートが
軸線方向に沿って、しかも、軸線方向に螺旋状に配置さ
れる。この螺旋の程度は、例えば、軸線方向に５〜１０
０ｃｍ進行したとき１回転する程度の螺旋で十分であ
る。That is, according to the present embodiment, the stirring member 11
The fin plates having a cross-sectional shape are arranged along the axial direction and spirally in the axial direction. The degree of this spiral is, for example, 5 to 10 in the axial direction.
A spiral that makes one rotation when traveling 0 cm is sufficient.
【００５５】フィンプレート１１としては、例えば、厚
さ０．１〜５ｍｍのポリプロピレン、ポリエチレン、ナ
イロン、塩化ビニール、ゴム系樹脂などの可撓性を有す
る材料にて作製することができる。The fin plate 11 can be made of, for example, a flexible material having a thickness of 0.1 to 5 mm, such as polypropylene, polyethylene, nylon, vinyl chloride, or a rubber-based resin.
【００５６】このような撹拌部材１１を設けることによ
り、補強筋１の一端に注入された樹脂が他端へと移動す
るとき、この撹１１拌部材によって撹拌され、補強繊維
束２への含浸が効率よく達成される。By providing such a stirring member 11, when the resin injected into one end of the reinforcing bar 1 moves to the other end, the resin is stirred by the stirring member 11 so that the reinforcing fiber bundle 2 is impregnated. Achieved efficiently.
【００５７】実施例８ 図１２に本発明の他の実施例に係る強化繊維補強筋１を
示す。本実施例では、強化繊維補強筋１は、その中心部
に軸線方向に沿って内管４０としての通気性管状部材が
配置される。Embodiment 8 FIG. 12 shows a reinforcing fiber reinforcing bar 1 according to another embodiment of the present invention. In this embodiment, the reinforcing fiber reinforcement 1 is provided with an air-permeable tubular member as the inner tube 40 in the center thereof along the axial direction.
【００５８】つまり、この実施例によれば、強化繊維補
強筋、所謂、コンクリート補強筋１は、可撓性の管状被
覆部材４と、その内部に配置された通気性管状部材４０
と、管状被覆部材４と通気性管状部材４０とにて画成さ
れる環状空間Ｇに配置された補強繊維束２と、を有す
る。That is, according to this embodiment, the reinforcing fiber reinforcement, the so-called concrete reinforcement 1, is composed of the flexible tubular covering member 4 and the breathable tubular member 40 disposed therein.
And a reinforcing fiber bundle 2 disposed in an annular space G defined by the tubular covering member 4 and the air-permeable tubular member 40.
【００５９】管状被覆部材４及び補強繊維束２は、先の
実施例１にて説明したと同じものとすることができ、そ
の説明は省略する。The tubular covering member 4 and the reinforcing fiber bundle 2 can be the same as those described in the first embodiment, and the description is omitted.
【００６０】本実施例にて使用する通気性管状部材とし
ては、壁に孔径０．１〜５ｍｍの細孔が形成された、内
径１〜１００ｍｍ、肉厚０．０１〜１００ｍｍの可撓性
の管状部材とされ、例えば、上記管状被覆部材４と同様
に、金属又は樹脂材料で作製される。樹脂材料として
は、ポリエチレン、ポリプロピレン、ナイロン、塩化ビ
ニール、ゴム系樹脂などが好適に使用される。The air-permeable tubular member used in the present embodiment is a flexible tubular member having an inner diameter of 1 to 100 mm and a wall thickness of 0.01 to 100 mm in which pores having a diameter of 0.1 to 5 mm are formed in the wall. The tubular member is made of, for example, a metal or resin material, like the tubular covering member 4. As the resin material, polyethylene, polypropylene, nylon, vinyl chloride, rubber-based resin and the like are preferably used.
【００６１】本実施例においても、補強繊維束２が配置
された環状空間Ｇ内には、上述したように、樹脂が注入
されるに十分な空隙が保持されている。即ち、長さＬに
おける環状空間Ｇの容積をＶT 、この容積ＶT における
補強繊維束２が占める容積（体積）をＶF とすると、環
状空間Ｇ内における補強繊維束の占有率（％）は、（Ｖ
F ÷ＶT ）×１００で示すことができ、好ましくは、５
〜８０％とされる。補強繊維束２の占有率が５％より少
ないと、樹脂を多量に必要とする、更には、樹脂注入時
に環状空間Ｇ内に空気が残留する、といった問題があ
り、又、８０％より大きいと、樹脂の注入時に過大な圧
力を要する、又、繊維束２内に十分に樹脂が含浸しな
い、といった問題が発生する。Also in this embodiment, a sufficient space for resin injection is maintained in the annular space G in which the reinforcing fiber bundle 2 is disposed, as described above. That is, assuming that the volume of the annular space G in the length L is V T , and the volume (volume) occupied by the reinforcing fiber bundle 2 in the volume V T is V F , the occupancy rate (%) of the reinforcing fiber bundle in the annular space G. Is (V
F ÷ V T ) × 100, preferably 5
８０80%. If the occupation ratio of the reinforcing fiber bundle 2 is less than 5%, there is a problem that a large amount of resin is required, and further, air remains in the annular space G when the resin is injected. In addition, there are problems that an excessive pressure is required at the time of injecting the resin, and that the resin is not sufficiently impregnated in the fiber bundle 2.
【００６２】本実施例の補強筋１によれば、図１３に示
す樹脂注入方法により極めて効率よく且つ短時間で環状
空間Ｇ内の補強繊維束２に樹脂を含浸することができ
る。以下に説明する実施例の樹脂注入方法は、補強筋１
を鉄筋構造体に組み付ける前、或いは後のいずれにおい
ても実施することができる。According to the reinforcing bar 1 of this embodiment, the resin can be impregnated into the reinforcing fiber bundle 2 in the annular space G very efficiently and in a short time by the resin injection method shown in FIG. The resin injection method of the embodiment described below uses the reinforcing bar 1
Can be carried out either before or after assembling to the rebar structure.
【００６３】図１３に示す樹脂注入方法によると、補強
筋１の一端、図１３にて左側端は、補強繊維束２が突出
しており、樹脂注入器２０がこの補強繊維束２の突出端
部２Ａ及び管状被覆部材４の端部に取付具２７にて密着
嵌合して取り付けられる。According to the resin injection method shown in FIG. 13, the reinforcing fiber bundle 2 protrudes from one end of the reinforcing bar 1 and the left end in FIG. 2A and the end of the tubular covering member 4 are attached to the fitting 27 by close fitting.
【００６４】又、通気性管状部材４０の、前記樹脂注入
器２０が設置された側の端部は、栓体３６にて密封さ
れ、反対側端部には、真空ポンプのような真空源に接続
するための排気器３０が設置される。真空ポンプを作動
させると、通気性管状部材４０を介して、補強繊維束２
内の空気が吸引され、排気可能とされる。The end of the air-permeable tubular member 40 on the side where the resin injector 20 is installed is sealed with a stopper 36, and the opposite end is connected to a vacuum source such as a vacuum pump. An exhaust 30 for connection is provided. When the vacuum pump is operated, the reinforcing fiber bundle 2
The air inside is sucked and can be exhausted.
【００６５】斯かる構成にて、樹脂注入口２１Ｃより注
入器２０内へと樹脂Ｒを供給すると、樹脂Ｒは、管状被
覆部材４の一端から内部へと注入され、そして他方の端
部へと流動する過程において補強繊維束２内へと含浸さ
れる。When the resin R is supplied into the injector 20 from the resin injection port 21C in such a configuration, the resin R is injected from one end of the tubular covering member 4 to the inside and then to the other end. During the flowing process, the reinforcing fiber bundle 2 is impregnated.
【００６６】このとき、真空ポンプを作動させて補強繊
維束２内の空気を除去し、補強繊維束２内への樹脂Ｒの
含浸を効率よく且つ短時間にて行なうことができる。別
法として、上記注入器２０を使用して管状被覆部材４内
へと樹脂Ｒを注入するに先立って、真空ポンプにて管状
被覆部材４内を真空引きし、補強繊維束２内の空気を除
去しておくことも可能である。At this time, the air in the reinforcing fiber bundle 2 is removed by operating the vacuum pump, and the impregnation of the resin R into the reinforcing fiber bundle 2 can be performed efficiently and in a short time. Alternatively, prior to injecting the resin R into the tubular covering member 4 using the injector 20, the inside of the tubular covering member 4 is evacuated by a vacuum pump to remove air in the reinforcing fiber bundle 2. It is also possible to remove it.
【００６７】実施例９ 図１４に本発明の他の実施例に係る強化繊維補強筋１を
示す。本実施例の強化繊維補強筋１は、図１２を参照し
て説明した実施例８の補強筋１と同様の構成とされる
が、実施例８にてその中心部に軸線方向に沿って配置さ
れた内管４０としての通気性管状部材の代わりに、樹脂
流通性管状部材を使用した点でのみ相違する。Embodiment 9 FIG. 14 shows a reinforcing fiber reinforcing bar 1 according to another embodiment of the present invention. The reinforcing fiber reinforcing bar 1 of the present embodiment has the same configuration as the reinforcing bar 1 of the eighth embodiment described with reference to FIG. 12, but is arranged in the center of the eighth embodiment along the axial direction. The only difference is that a resin-flowable tubular member is used instead of the air-permeable tubular member as the inner tube 40.
【００６８】つまり、この実施例によれば、補強筋１
は、可撓性の管状被覆部材４と、その内部に配置された
樹脂流通性管状部材４０と、管状被覆部材４と樹脂流通
性管状部材４０とにて画成される環状空間部に配置され
た補強繊維束２と、を有する。That is, according to this embodiment, the reinforcing bars 1
Are disposed in an annular space defined by the flexible tubular covering member 4, the resin-flowable tubular member 40 disposed therein, and the tubular covering member 4 and the resin-flowable tubular member 40. Reinforcing fiber bundle 2.
【００６９】管状被覆部材４及び補強繊維束２は、先の
実施例１にて説明したと同じものとすることができ、そ
の説明は省略する。The tubular covering member 4 and the reinforcing fiber bundle 2 can be the same as those described in the first embodiment, and the description is omitted.
【００７０】本実施例にて使用する樹脂流通性管状部材
４０としては、壁に孔径０．１〜５ｍｍの細孔が形成さ
れた、内径１〜１００ｍｍ、肉厚０．０１〜１００ｍｍ
の可撓性の管状部材とされ、例えば、上記管状被覆部材
４と同様に、金属又は樹脂材料で作製される。樹脂材料
としては、ポリエチレン、ポリプロピレン、ナイロン、
塩化ビニール、ゴム系樹脂などが好適に使用される。As the resin-flowable tubular member 40 used in this embodiment, a wall having pores having a diameter of 0.1 to 5 mm, an inner diameter of 1 to 100 mm, and a wall thickness of 0.01 to 100 mm
The tubular member is made of a metal or resin material, for example, like the tubular covering member 4. As resin materials, polyethylene, polypropylene, nylon,
Vinyl chloride, rubber-based resin and the like are preferably used.
【００７１】本実施例においても、補強繊維束２が配置
された環状空間Ｇ内には、上述したように、樹脂が注入
されるに十分な空隙が保持されている。即ち、長さＬに
おける環状空間Ｇの容積をＶT 、この容積ＶT における
補強繊維束２が占める容積（体積）をＶF とすると、環
状空間Ｇ内における補強繊維束２の占有率（％）は、
（ＶF ÷ＶT ）×１００で示すことができ、好ましく
は、５〜８０％とされる。補強繊維束２の占有率が５％
より少ないと、樹脂を多量に必要とする、更には、樹脂
注入時に環状空間Ｇ内に空気が残留する、といった問題
があり、又、８０％より大きいと、樹脂の注入時に過大
な圧力を要する、又、繊維束２内に十分に樹脂が含浸し
ない、といった問題が発生する。Also in the present embodiment, as described above, a space sufficient for resin injection is maintained in the annular space G in which the reinforcing fiber bundle 2 is disposed. That is, assuming that the volume of the annular space G in the length L is V T , and the volume (volume) occupied by the reinforcing fiber bundle 2 in this volume V T is V F , the occupancy rate (%) of the reinforcing fiber bundle 2 in the annular space G )
(V F TV T ) × 100, preferably 5 to 80%. 5% occupancy of reinforcing fiber bundle 2
If the amount is smaller than this, there is a problem that a large amount of resin is required, and further, air remains in the annular space G at the time of injecting the resin. In addition, there is a problem that the fiber bundle 2 is not sufficiently impregnated with the resin.
【００７２】本実施例の補強筋１によれば、図１５に示
す樹脂注入方法により極めて効率よく、短時間にて環状
空間Ｇ内の補強繊維束２に樹脂を含浸することができ
る。本実施例の樹脂注入方法は、補強筋１を鉄筋構造体
に組み付ける前、或いは後のいずれにおいても実施する
ことができる。According to the reinforcing bar 1 of this embodiment, the resin can be impregnated into the reinforcing fiber bundle 2 in the annular space G very efficiently in a short time by the resin injection method shown in FIG. The resin injection method of the present embodiment can be performed before or after assembling the reinforcing bar 1 to the reinforcing bar structure.
【００７３】図１５に示す樹脂注入方法によると、補強
筋１の一端、図１５にて左側端は、補強繊維束２が突出
しており、真空ポンプのような真空源に接続するための
排気器３０がこの補強繊維束２の突出端部２Ａ及び管状
被覆部材４の端部に取付具３１にて密着嵌合して取り付
けられる。真空ポンプを作動させると、補強繊維束２内
の空気が吸引され、排気される。According to the resin injection method shown in FIG. 15, the reinforcing fiber bundle 2 protrudes at one end of the reinforcing bar 1 and at the left end in FIG. 15, and an exhaust device for connecting to a vacuum source such as a vacuum pump. Numeral 30 is attached to the protruding end portion 2A of the reinforcing fiber bundle 2 and the end portion of the tubular covering member 4 by closely fitting with a fixture 31. When the vacuum pump is operated, the air in the reinforcing fiber bundle 2 is sucked and exhausted.
【００７４】又、樹脂流通性管状部材４０の、前記排気
器３０が設置された側の端部は、栓体３６にて密封さ
れ、反対側端部には、樹脂注入器２０が設置される。The end of the resin-flowable tubular member 40 on the side where the exhaust unit 30 is installed is sealed with a plug 36, and the resin injector 20 is installed on the opposite end. .
【００７５】斯かる構成にて、注入器２０の樹脂注入口
２１Ｃより樹脂流通性管状部材４０内へと樹脂Ｒを供給
すると、樹脂Ｒは、樹脂流通性管状部材４０の一端から
内部へと注入され、そして他方の端部へと流動する過程
において前記樹脂流通性管状部材４０の樹脂流通孔４２
を介して補強繊維束２内へと含浸される。In this configuration, when the resin R is supplied from the resin injection port 21C of the injector 20 into the resin-flowable tubular member 40, the resin R is injected from one end of the resin-flowable tubular member 40 into the inside. And in the process of flowing to the other end, the resin flow hole 42 of the resin flowable tubular member 40.
Through the reinforcing fiber bundle 2.
【００７６】このとき、真空ポンプを作動させて補強繊
維束２内の空気を排気することによって、補強繊維束２
内への樹脂Ｒの含浸を効率よく且つ短時間にて行なうこ
とができる。別法として、上記注入器２０を使用して管
状被覆部材４内へと樹脂Ｒを注入するに先立って、真空
ポンプにて管状被覆部材４内を真空引きし、補強繊維束
２内の空気を除去しておくことも可能である。At this time, the air in the reinforcing fiber bundle 2 is exhausted by operating the vacuum pump, so that the reinforcing fiber bundle 2
The resin R can be impregnated into the inside efficiently and in a short time. Alternatively, prior to injecting the resin R into the tubular covering member 4 using the injector 20, the inside of the tubular covering member 4 is evacuated by a vacuum pump to remove air in the reinforcing fiber bundle 2. It is also possible to remove it.
【００７７】上記各実施例で説明した本発明の強化繊維
補強筋１は、コンクリート補強筋として、コンクリート
構造物を新たに建設する場合には、コンクリートを打設
する前の鉄筋構造体に帯鉄筋などとして組込んで使用す
ることができるが、既に建設されている、例えば橋脚な
どの補修、補強工事においても現場にて所望形状に加工
して組み付けることができ、極めて補修作業を効率よく
施工することができる。The reinforcing fiber reinforcement 1 according to the present invention described in each of the above embodiments is used as a concrete reinforcement when a new concrete structure is to be constructed. Although it can be used as built-in, etc., it can be processed and assembled to the desired shape at the site even in repairing and reinforcing work such as bridge piers already constructed, and extremely efficient repair work is performed be able to.
【００７８】更に、本発明の強化繊維補強筋１は、コン
クリート補強筋としての用途以外に、鉄筋構造体の一部
としてではなく、例えばフック部材、ロッド材、その他
建設現場で必要な種々の建設用資材として様々な形状に
変形加工して使用することができる。勿論、本発明の強
化繊維補強筋１は、建設用資材以外にも種々の用途に使
用し得る。Further, the reinforcing fiber reinforcing bar 1 of the present invention is used not only as a concrete reinforcing bar but also as a hook member, a rod member, and other various constructions required at a construction site, not as a part of a reinforcing structure. It can be deformed into various shapes and used as a material. Of course, the reinforcing fiber reinforcement 1 of the present invention can be used for various uses other than construction materials.
【００７９】[0079]
【発明の効果】以上説明したように、本発明のコンクリ
ート補強筋は、多数本の強化繊維を有する補強繊維束
と、前記補強繊維束の長手方向に沿って延在し、十分な
空隙を有した態様で前記補強繊維束を囲包して配置され
た可撓性の管状被覆部材と、必要に応じて、管状被覆部
材内に配置された内管と、を有する構成とされるか、更
には、補強繊維束に予め樹脂が含浸され、半硬化状態の
構成とされるので、建設現場にて任意の形状に容易に折
り曲げるなどの加工を施すことが可能であり、作業性に
おいて極めて優れている。又、本発明のコンクリート補
強筋は、炭素繊維などの強化繊維を使用し、軽量で、強
度的に優れ、且つ変形自在であり、従って、現場での作
業性に優れ、しかも耐候性、及び酸、アルカリ、塩分に
対する耐腐食性に優れており、斯かるコンクリート補強
筋を使用することにより、極めて作業効率よくコンクリ
ート構造物の補強を達成し得る。又、本発明の補強筋の
製造方法によれば、管状被覆部材内の空気を排気して、
管状被覆部材内へと樹脂注入を行う構成とされるので、
補強繊維束への樹脂含浸を極めて効率よく且つ短時間に
て達成することができる。As described above, the concrete reinforcing bar of the present invention has a reinforcing fiber bundle having a large number of reinforcing fibers, and extends along the longitudinal direction of the reinforcing fiber bundle, and has a sufficient gap. A flexible tubular covering member arranged so as to surround the reinforcing fiber bundle in a manner described above, and, if necessary, an inner tube arranged in the tubular covering member, or Since the reinforcing fiber bundle is impregnated with a resin in advance and is in a semi-cured state, it can be easily bent into an arbitrary shape at a construction site, and is extremely excellent in workability. I have. Further, the concrete reinforcing bar of the present invention uses a reinforcing fiber such as carbon fiber, is lightweight, has excellent strength, and is deformable, so that it has excellent workability on site, and has weather resistance and acid resistance. It is excellent in corrosion resistance against alkalis and salts, and by using such concrete reinforcing bars, it is possible to reinforce concrete structures with extremely high work efficiency. Further, according to the method for producing a reinforcing bar of the present invention, exhausting air in the tubular covering member,
Because it is configured to inject resin into the tubular covering member,
The resin impregnation into the reinforcing fiber bundle can be achieved extremely efficiently and in a short time.
【図１】本発明に係るコンクリート補強筋の一実施例の
斜視図である。FIG. 1 is a perspective view of one embodiment of a concrete reinforcing bar according to the present invention.
【図２】本発明に係るコンクリート補強筋の他の実施例
の斜視図である。FIG. 2 is a perspective view of another embodiment of a concrete reinforcing bar according to the present invention.
【図３】本発明に係るコンクリート補強筋の他の実施例
の斜視図である。FIG. 3 is a perspective view of another embodiment of a concrete reinforcing bar according to the present invention.
【図４】本発明に係るコンクリート構造物の補強方法を
説明するためのコンクリート構造物の断面図である。FIG. 4 is a cross-sectional view of a concrete structure for illustrating a method of reinforcing a concrete structure according to the present invention.
【図５】本発明に係るコンクリート構造物の補強方法を
説明するための他のコンクリート構造物の断面図であ
る。FIG. 5 is a cross-sectional view of another concrete structure for illustrating a method of reinforcing a concrete structure according to the present invention.
【図６】本発明に係るコンクリート構造物の補強方法を
説明するための他のコンクリート構造物の断面図であ
る。FIG. 6 is a cross-sectional view of another concrete structure for illustrating a method of reinforcing a concrete structure according to the present invention.
【図７】本発明に係るコンクリート補強筋に樹脂を注入
するための樹脂注入方法を説明するための図である。FIG. 7 is a view for explaining a resin injection method for injecting a resin into a concrete reinforcing bar according to the present invention.
【図８】本発明に係るコンクリート補強筋の他の実施例
の横断面図である。FIG. 8 is a cross-sectional view of another embodiment of the concrete reinforcing bar according to the present invention.
【図９】図８の補強筋を使用したコンクリート構造物の
補強方法を説明するための補強筋の縦断面図である。9 is a longitudinal sectional view of a reinforcing bar for explaining a method of reinforcing a concrete structure using the reinforcing bar of FIG. 8;
【図１０】本発明に係るコンクリート補強筋に樹脂を注
入するための他の実施例に係る樹脂注入方法を説明する
ための図である。FIG. 10 is a view for explaining a resin injection method according to another embodiment for injecting a resin into a concrete reinforcing bar according to the present invention.
【図１１】本発明に係るコンクリート補強筋の他の実施
例の横断面図である。FIG. 11 is a cross-sectional view of another embodiment of the concrete reinforcing bar according to the present invention.
【図１２】本発明に係るコンクリート補強筋の他の実施
例の横断面図である。FIG. 12 is a cross-sectional view of another embodiment of the concrete reinforcing bar according to the present invention.
【図１３】図１２に示すコンクリート補強筋に樹脂を注
入するための他の実施例に係る樹脂注入方法を説明する
ための図である。FIG. 13 is a view for explaining a resin injection method according to another embodiment for injecting a resin into the concrete reinforcing bars shown in FIG.
【図１４】本発明に係るコンクリート補強筋の他の実施
例の横断面図である。FIG. 14 is a cross-sectional view of another embodiment of the concrete reinforcing bar according to the present invention.
【図１５】図１４に示すコンクリート補強筋に樹脂を注
入するための他の実施例に係る樹脂注入方法を説明する
ための図である。FIG. 15 is a view for explaining a resin injection method according to another embodiment for injecting a resin into the concrete reinforcement shown in FIG. 14;
１ コンクリート補強筋 ２ 補強繊維束 ４ 可撓性管状被覆部材 ８ 突起 １１ 撹拌部材 ４０ 内管 DESCRIPTION OF SYMBOLS 1 Concrete reinforcement 2 Reinforcement fiber bundle 4 Flexible tubular covering member 8 Projection 11 Stirring member 40 Inner pipe
───────────────────────────────────────────────────── フロントページの続き (72)発明者 植村 政彦 東京都渋谷区広尾一丁目１番39号 東燃株 式会社内 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masahiko Uemura 1-39 Hiroo, Shibuya-ku, Tokyo Inside Tonen Co., Ltd.
Claims (47)
と、前記補強繊維束の長手方向に沿って延在し、十分な
空隙を有した態様で前記補強繊維束を囲包して配置され
た可撓性の管状被覆部材と、を有することを特徴とする
強化繊維補強筋。1. A reinforcing fiber bundle having a large number of reinforcing fibers, and extending along the longitudinal direction of the reinforcing fiber bundle and arranged so as to surround the reinforcing fiber bundle in a manner having a sufficient space. And a flexible tubular covering member.
され、前記補強繊維束へと含浸されて可撓性を有する半
硬化状態とされていることを特徴とする請求項１の強化
繊維補強筋。2. The reinforcing fiber according to claim 1, wherein a resin is injected into the inside of the tubular covering member, and the reinforcing fiber bundle is impregnated into a semi-cured state having flexibility. Reinforcement.
に平行に或いは螺旋状に捻って、又は、編み込むことに
よって前記管状被覆部材内に配置される請求項１又は２
の強化繊維補強筋。3. The reinforcing fiber of the reinforcing fiber bundle is arranged in the tubular covering member by being twisted or braided in parallel or spirally in the axial direction.
Reinforcing fiber reinforcement.
が配置される請求項１又は２の強化繊維補強筋。4. The reinforcing fiber reinforcement according to claim 1, wherein a stirring member is further disposed in the tubular covering member.
れ、軸線方向に螺旋状に捻れているフィンプレートであ
る請求項４の強化繊維補強筋。5. The reinforcing fiber reinforcing bar according to claim 4, wherein the stirring member is a fin plate having a cross-section in a cross section and being spirally twisted in an axial direction.
が配置される請求項１、２又は３の強化繊維補強筋。6. The reinforcing fiber reinforcement according to claim 1, wherein a heating member is further disposed in the tubular covering member.
６の強化繊維補強筋。7. The reinforcing fiber reinforcement according to claim 6, wherein the heating member is a heater wire.
有した内管が配置され、前記補強繊維束は、前記管状被
覆部材と前記内管とにて画成される環状空間に配置され
ることを特徴とする請求項１、２又は３の強化繊維補強
筋。8. An inner tube having a large number of pores is arranged inside the tubular covering member, and the reinforcing fiber bundle is arranged in an annular space defined by the tubular covering member and the inner tube. The reinforcing fiber reinforcement according to claim 1, 2 or 3, wherein
容積ＶT における前記補強繊維束の占有容積をＶF とす
ると、前記管状被覆部材内の補強繊維束の占有率
（％）、即ち、（ＶF ÷ＶT ）×１００は、５〜８０％
とされる請求項１又は２の強化繊維補強筋。9. Assuming that the volume in the tubular covering member is V T and the volume occupied by the reinforcing fiber bundle in the volume V T is V F , the occupancy (%) of the reinforcing fiber bundle in the tubular covering member is: That, (V F ÷ V T) × 100 is 5% to 80%
The reinforcing fiber reinforcement according to claim 1 or 2, wherein
積ＶT における前記補強繊維束の占有容積をＶF とする
と、前記環状空間内の補強繊維束の占有率（％）、即
ち、（ＶF ÷ＶT ）×１００は、５〜８０％とされる請
求項８の強化繊維補強筋。10. Assuming that the volume in the annular space is V T , and the volume occupied by the reinforcing fiber bundle in the volume V T is V F , the occupancy rate (%) of the reinforcing fiber bundle in the annular space, that is, (V F ÷ V T) × 100 , the reinforcing fibers reinforcement according to claim 8 which is 5% to 80%.
維、セラミックス繊維を含む無機繊維、アラミド繊維、
ポリエチレン繊維、ポリプロピレン繊維、ナイロン繊維
を含む有機繊維、又はチタン繊維、ステンレススチール
繊維、鉄繊維を含む金属繊維を単独で、又は複数種を混
合して使用する請求項１〜１０のいずれかの項に記載の
強化繊維補強筋。11. The reinforcing fibers include carbon fibers, glass fibers, inorganic fibers including ceramic fibers, aramid fibers,
The organic fiber containing polyethylene fiber, polypropylene fiber, nylon fiber, or titanium fiber, stainless steel fiber, metal fiber containing iron fiber alone or a mixture of plural kinds is used. The reinforcing fiber reinforcement according to any one of the above.
／ｍｍ2 以上、弾性率が１０Ｔｏｎｆ／ｍｍ2 以上であ
る請求項１１の強化繊維補強筋。12. The carbon fiber has a strength of 100 kgf.
/ Mm 2 or more, the reinforcing fiber reinforcement of claim 11 is the elastic modulus 10Tonf / mm 2 or more.
／ｍｍ2 以上、弾性率が２Ｔｏｎｆ／ｍｍ2 以上である
請求項１１の強化繊維補強筋。13. The organic fiber has a strength of 100 kgf.
/ Mm 2 or more, the reinforcing fiber reinforcement of claim 11 is the elastic modulus 2Tonf / mm 2 or more.
２〜１００ｍｍ、肉厚が０．０１〜５０ｍｍとされる請
求項１、２又は８の強化繊維補強筋。14. The reinforcing fiber reinforcing bar according to claim 1, wherein the flexible tubular covering member has an inner diameter of 2 to 100 mm and a thickness of 0.01 to 50 mm.
０ｍｍ、肉厚が０．０１〜５０ｍｍとされる請求項８の
強化繊維補強筋。15. The flexible inner tube has an inner diameter of 1 to 10.
9. The reinforcing fiber reinforcement according to claim 8, wherein the reinforcing fiber has a thickness of 0 mm and a thickness of 0.01 to 50 mm.
管は、金属又は樹脂材料で作製される請求項１４又は１
５の強化繊維補強筋。16. The flexible tubular covering member and the inner tube are made of a metal or a resin material.
5. Reinforcing fiber reinforcement.
プロピレン、ナイロン、塩化ビニール、ゴム系樹脂を含
む請求項１６の強化繊維補強筋。17. The reinforcing fiber reinforcement according to claim 16, wherein the resin material includes polyethylene, polypropylene, nylon, vinyl chloride, or a rubber-based resin.
表面に凹凸形状が形成される請求項１４〜１７のいずれ
かの項に記載の強化繊維補強筋。18. The reinforcing fiber reinforcement according to claim 14, wherein the flexible tubular covering member has an uneven shape on an outer surface thereof.
繊維束と、前記補強繊維束の長手方向に沿って延在し、
十分な空隙を有した態様で前記補強繊維束を囲包して配
置された可撓性の管状被覆部材と、を有する強化繊維補
強筋を所定形状に変形し、所定位置に取付ける工程、
（ｂ）前記所定位置に取付けられた強化繊維補強筋の前
記管状被覆部材の内部へと樹脂を注入し、前記管状被覆
部材内の前記補強繊維束に樹脂を含浸させる工程、
（ｃ）前記強化繊維補強筋の前記補強繊維束に含浸した
樹脂を硬化する工程、を備えたコンクリート構造物の補
強方法。19. (a) a reinforcing fiber bundle having a large number of reinforcing fibers, and extending along a longitudinal direction of the reinforcing fiber bundle;
A flexible tubular covering member disposed so as to surround the reinforcing fiber bundle in a manner having a sufficient space, and a reinforcing fiber reinforcing bar having a predetermined shape, and attaching the reinforcing fiber reinforcing member to a predetermined position;
(B) injecting a resin into the inside of the tubular covering member of the reinforcing fiber reinforcement attached to the predetermined position, and impregnating the reinforcing fiber bundle in the tubular covering member with the resin;
(C) curing a resin impregnated in the reinforcing fiber bundle of the reinforcing fiber reinforcing bar.
繊維束と、前記補強繊維束の長手方向に沿って延在し、
十分な空隙を有した態様で前記補強繊維束を囲包して配
置された可撓性の管状被覆部材と、前記管状被覆部材の
内部に注入され、前記補強繊維束へと含浸された樹脂
と、を有する可撓性の強化繊維補強筋を所定形状に変形
し、所定位置に取付ける工程、（ｂ）前記強化繊維補強
筋の前記補強繊維束に含浸した樹脂を硬化する工程、を
備えたコンクリート構造物の補強方法。20. (a) a reinforcing fiber bundle having a large number of reinforcing fibers, and extending along a longitudinal direction of the reinforcing fiber bundle;
A flexible tubular covering member arranged so as to surround the reinforcing fiber bundle in a manner having a sufficient space, and a resin injected into the tubular covering member and impregnated into the reinforcing fiber bundle. A step of deforming the flexible reinforcing fiber reinforcement having a predetermined shape and attaching it to a predetermined position, and (b) curing the resin impregnated in the reinforcing fiber bundle of the reinforcing fiber reinforcement. How to reinforce structures.
向に平行に或いは螺旋状に捻って、又は、編み込むこと
によって前記管状被覆部材内に配置される請求項１９又
は２０のコンクリート構造物の補強方法。21. The concrete structure according to claim 19, wherein the reinforcing fibers of the reinforcing fiber bundle are arranged in the tubular covering member by being twisted or braided in an axially parallel or spiral manner. Reinforcement method.
材が配置される請求項１９又は２０のコンクリート構造
物の補強方法。22. The method for reinforcing a concrete structure according to claim 19, wherein a stirring member is further disposed in the tubular covering member.
れ、軸線方向に螺旋状に捻れているフィンプレートであ
る請求項１９又は２０のコンクリート構造物の補強方
法。23. The method for reinforcing a concrete structure according to claim 19, wherein the stirring member is a fin plate having a cross-shaped cross section and being spirally twisted in an axial direction.
材が配置される請求項１９又は２０のコンクリート構造
物の補強方法。24. The method for reinforcing a concrete structure according to claim 19, wherein a heating member is further disposed in the tubular covering member.
項２４のコンクリート構造物の補強方法。25. The method for reinforcing a concrete structure according to claim 24, wherein the heating member is a heater wire.
により発熱させ、前記補強繊維束に含浸した樹脂を加熱
硬化する請求項２５のコンクリート構造物の補強方法。26. The method for reinforcing a concrete structure according to claim 25, wherein power is supplied to the heating member from a power source to generate heat, and the resin impregnated in the reinforcing fiber bundle is heated and cured.
を有した内管が配置され、前記補強繊維束は、前記管状
被覆部材と前記内管とにて画成される環状空間に配置さ
れることを特徴とする請求項１９、２０又は２１のコン
クリート構造物の補強方法。27. An inner tube having a large number of pores is arranged inside the tubular covering member, and the reinforcing fiber bundle is arranged in an annular space defined by the tubular covering member and the inner tube. 22. The method for reinforcing a concrete structure according to claim 19, 20, or 21.
の容積ＶT における前記補強繊維束の占有容積をＶF と
すると、前記樹脂を前記管状被覆部材内へと注入する前
の前記管状被覆部材内の補強繊維束の占有率（％）、即
ち、（ＶF ÷ＶT ）×１００は、５〜８０％とされる請
求項１９又は２０のコンクリート構造物の補強方法。28. Assuming that the volume in the tubular covering member is V T , and the occupied volume of the reinforcing fiber bundle in the volume V T is V F , the tubular shape before the resin is injected into the tubular covering member. occupancy of the reinforcing fiber bundle in the cover member (%), i.e., (V F ÷ V T) × 100 , the reinforcing method of the concrete structure of claim 19 or 20 are 5% to 80%.
積ＶT における前記補強繊維束の占有容積をＶF とする
と、前記樹脂を前記環状空間内へと注入する前の前記環
状空間内の補強繊維束の占有率（％）、即ち、（ＶF ÷
ＶT ）×１００は、５〜８０％とされる請求項２７のコ
ンクリート構造物の補強方法。29. Assuming that the volume in the annular space is V T and the volume occupied by the reinforcing fiber bundle in the volume V T is V F , the volume in the annular space before the resin is injected into the annular space. Of the reinforcing fiber bundle (%), that is, (V F Ｖ
28. The method for reinforcing a concrete structure according to claim 27, wherein V T ) × 100 is 5 to 80%.
維、セラミックス繊維を含む無機繊維、アラミド繊維、
ポリエチレン繊維、ポリプロピレン繊維、ナイロン繊維
を含む有機繊維、又はチタン繊維、ステンレススチール
繊維、鉄繊維を含む金属繊維を単独で、又は複数種を混
合して使用する請求項１９〜２９のいずれかの項に記載
のコンクリート構造物の補強方法。30. The reinforcing fibers include carbon fibers, glass fibers, inorganic fibers including ceramic fibers, aramid fibers,
The organic fiber containing polyethylene fiber, polypropylene fiber, nylon fiber, or the metal fiber containing titanium fiber, stainless steel fiber, and iron fiber is used alone or in combination of plural kinds. 3. The method for reinforcing a concrete structure according to item 2.
／ｍｍ2 以上、弾性率が１０Ｔｏｎｆ／ｍｍ2 以上であ
る請求項３０のコンクリート構造物の補強方法。31. The carbon fiber has a strength of 100 kgf.
/ Mm 2 or more, a reinforcing method of a concrete structure of claim 30 modulus is 10Tonf / mm 2 or more.
／ｍｍ2 以上、弾性率が２Ｔｏｎｆ／ｍｍ2 以上である
請求項３０のコンクリート構造物の補強方法。32. The organic fiber has a strength of 100 kgf.
/ Mm 2 or more, a reinforcing method of a concrete structure of claim 30 modulus is 2Tonf / mm 2 or more.
２〜１００ｍｍ、肉厚が０．０１〜５０ｍｍとされる請
求項１９、２０又は２７のコンクリート構造物の補強方
法。33. The method for reinforcing a concrete structure according to claim 19, 20 or 27, wherein the flexible tubular covering member has an inner diameter of 2 to 100 mm and a thickness of 0.01 to 50 mm.
０ｍｍ、肉厚が０．０１〜１００ｍｍとされる請求項２
７のコンクリート構造物の補強方法。34. The flexible inner tube has an inner diameter of 1 to 10.
The thickness is 0 mm and the thickness is 0.01 to 100 mm.
7. A method for reinforcing a concrete structure.
は樹脂材料で作製される請求項３３又は３４のコンクリ
ート構造物の補強方法。35. The method for reinforcing a concrete structure according to claim 33, wherein the flexible tubular covering member is made of a metal or a resin material.
プロピレン、ナイロン、塩化ビニール、ゴム系樹脂を含
む請求項３５のコンクリート構造物の補強方法。36. The method for reinforcing a concrete structure according to claim 35, wherein the resin material includes polyethylene, polypropylene, nylon, vinyl chloride, or a rubber-based resin.
表面に凹凸形状が形成される請求項３３〜３６のいずれ
かの項に記載のコンクリート構造物の補強方法。37. The method for reinforcing a concrete structure according to claim 33, wherein the flexible tubular covering member has an uneven surface formed on an outer surface thereof.
強化繊維を有する補強繊維束を備えた強化繊維補強筋の
前記管状被覆部材の一端から前記管状被覆部材内へと樹
脂を注入し、前記管状被覆部材の他端から排気すること
を特徴とする補強繊維束に樹脂が含浸された強化繊維補
強筋の製造方法。38. A resin is injected into the tubular covering member from one end of the tubular covering member of a reinforcing fiber reinforcing bar having a reinforcing fiber bundle having a large number of reinforcing fibers in a flexible tubular covering member. A method for producing a reinforcing fiber reinforcement in which a reinforcing fiber bundle is impregnated with a resin, wherein air is exhausted from the other end of the tubular covering member.
気は、樹脂を前記管状被覆部材内へと注入する前に行う
ことを特徴とする請求項３８の強化繊維補強筋の製造方
法。39. The method according to claim 38, wherein the evacuation from the other end of the tubular covering member is performed before resin is injected into the tubular covering member.
気は、樹脂を前記管状被覆部材内へと注入しながら行う
ことを特徴とする請求項３８の強化繊維補強筋の製造方
法。40. The method according to claim 38, wherein the exhaust from the other end of the tubular covering member is performed while injecting a resin into the tubular covering member.
強化繊維補強筋の長手方向の複数箇所において行うこと
を特徴とする請求項３８、３９又は４０の強化繊維補強
筋の製造方法。41. The method for producing a reinforcing fiber reinforcement according to claim 38, wherein the resin is injected and the exhaust is performed at a plurality of positions in a longitudinal direction of the reinforcing fiber reinforcement.
を有した内管が配置され、前記管状被覆部材と前記内管
とにて画成される環状空間に多数本の強化繊維を有する
補強繊維束を備えた強化繊維補強筋の前記管状被覆部材
の一端から前記管状被覆部材内へと樹脂を注入し、前記
内管の、前記樹脂注入端側とは反対側の他端から排気す
ることを特徴とする補強繊維束に樹脂が含浸された強化
繊維補強筋の製造方法。42. An inner tube having a large number of pores is disposed in a flexible tubular covering member, and a plurality of reinforcing fibers are provided in an annular space defined by the tubular covering member and the inner tube. Injecting a resin into the tubular covering member from one end of the tubular covering member of the reinforcing fiber reinforcement having a reinforcing fiber bundle having: A method for producing a reinforcing fiber reinforcing bar in which a resin is impregnated in a reinforcing fiber bundle, wherein exhaust is performed.
気は、樹脂を前記管状被覆部材内へと注入する前に行う
ことを特徴とする請求項４２の強化繊維補強筋の製造方
法。43. The method according to claim 42, wherein the exhaust from the other end of the tubular covering member is performed before injecting a resin into the tubular covering member.
気は、樹脂を前記管状被覆部材内へと注入しながら行う
ことを特徴とする請求項４２の強化繊維補強筋の製造方
法。44. The method according to claim 42, wherein the exhaust from the other end of the tubular covering member is performed while injecting a resin into the tubular covering member.
を有した内管が配置され、前記管状被覆部材と前記内管
とにて画成される環状空間に多数本の強化繊維を有する
補強繊維束を備えた強化繊維補強筋の前記管状被覆部材
の一端から排気し、前記内管の、前記排気端側とは反対
側の他端から前記内管内へと樹脂を注入することを特徴
とする補強繊維束に樹脂が含浸された強化繊維補強筋の
製造方法。45. An inner tube having a large number of pores disposed in a flexible tubular covering member, and a plurality of reinforcing fibers in an annular space defined by the tubular covering member and the inner tube. Exhausting from one end of the tubular covering member of the reinforcing fiber reinforcement having the reinforcing fiber bundle having: and injecting resin into the inner tube from the other end of the inner tube opposite to the exhaust end side. A method for producing a reinforcing fiber reinforcement in which a resin is impregnated in a reinforcing fiber bundle.
気は、樹脂を前記内管内へと注入する前に行うことを特
徴とする請求項４５の強化繊維補強筋の製造方法。46. The method according to claim 45, wherein the exhaust from one end of the tubular covering member is performed before injecting a resin into the inner tube.
気は、樹脂を前記内管内へと注入しながら行うことを特
徴とする請求項４５の強化繊維補強筋の製造方法。47. The method according to claim 45, wherein the exhaust from one end of the tubular covering member is performed while injecting a resin into the inner tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36775597A JP3679590B2 (en) | 1997-06-20 | 1997-12-29 | Method for reinforcing concrete structures |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18070597 | 1997-06-20 | ||
| JP9-180705 | 1997-06-20 | ||
| JP36775597A JP3679590B2 (en) | 1997-06-20 | 1997-12-29 | Method for reinforcing concrete structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1170596A true JPH1170596A (en) | 1999-03-16 |
| JP3679590B2 JP3679590B2 (en) | 2005-08-03 |
Family
ID=26500139
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|---|---|---|---|
| JP36775597A Expired - Fee Related JP3679590B2 (en) | 1997-06-20 | 1997-12-29 | Method for reinforcing concrete structures |
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| CN114606949A (en) * | 2022-04-02 | 2022-06-10 | 中交第三航务工程勘察设计院有限公司 | Novel concrete corrosion-resistant structure and construction method thereof |
| CN115387540A (en) * | 2022-09-30 | 2022-11-25 | 长安大学 | Tool and method for manufacturing FRP (fiber reinforced Plastic) rib material formed in situ |
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| JPS63201265A (en) * | 1987-02-13 | 1988-08-19 | 株式会社大林組 | Ps concrete construction method using carbon fiber |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003225950A (en) * | 2001-11-30 | 2003-08-12 | Toshiaki Ota | Fiber-reinforced plastics and device/method for manufacturing fiber-reinforced plastics |
| JP2005068671A (en) * | 2003-08-28 | 2005-03-17 | Yoko Akiyama | Long fiber material for concrete structural material and concrete structural material |
| JP2008180044A (en) * | 2007-01-26 | 2008-08-07 | Nishimatsu Constr Co Ltd | Molding method of fiber reinforced material |
| JP2012251378A (en) * | 2011-06-03 | 2012-12-20 | Komatsu Seiren Co Ltd | String-like reinforcement fiber composite |
| JP2017537826A (en) * | 2014-12-12 | 2017-12-21 | フンダシオ エウレカト | Method and system for producing parts made from composite materials, and parts produced from composite materials obtained by the method |
| KR101949513B1 (en) * | 2018-03-28 | 2019-02-22 | 주식회사 삼성그린기술 | Pillar made of fiber reinforced plastic installed outdoors and method for manufacturing the same |
| JP2020070506A (en) * | 2018-10-30 | 2020-05-07 | 株式会社イノアックコーポレーション | Composite reinforcement bar with heat-shrinkable tubing and production method thereof |
| CN114606949A (en) * | 2022-04-02 | 2022-06-10 | 中交第三航务工程勘察设计院有限公司 | Novel concrete corrosion-resistant structure and construction method thereof |
| CN115387540A (en) * | 2022-09-30 | 2022-11-25 | 长安大学 | Tool and method for manufacturing FRP (fiber reinforced Plastic) rib material formed in situ |
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| Publication number | Publication date |
|---|---|
| JP3679590B2 (en) | 2005-08-03 |
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