JPH0952744A - Mortar and concrete composition - Google Patents
Mortar and concrete compositionInfo
- Publication number
- JPH0952744A JPH0952744A JP22464495A JP22464495A JPH0952744A JP H0952744 A JPH0952744 A JP H0952744A JP 22464495 A JP22464495 A JP 22464495A JP 22464495 A JP22464495 A JP 22464495A JP H0952744 A JPH0952744 A JP H0952744A
- Authority
- JP
- Japan
- Prior art keywords
- fine
- mortar
- concrete
- fine powder
- mineral
- 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.)
- Pending
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 59
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 39
- 239000000203 mixture Substances 0.000 title claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 55
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 41
- 239000011707 mineral Substances 0.000 claims abstract description 41
- 239000010881 fly ash Substances 0.000 claims abstract description 15
- 229910000863 Ferronickel Inorganic materials 0.000 claims abstract description 14
- 239000004568 cement Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011398 Portland cement Substances 0.000 claims abstract description 12
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 11
- 239000012798 spherical particle Substances 0.000 claims abstract description 5
- 239000010419 fine particle Substances 0.000 claims description 17
- 239000002893 slag Substances 0.000 claims description 15
- 238000005422 blasting Methods 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 14
- 239000000463 material Substances 0.000 description 11
- 239000004576 sand Substances 0.000 description 11
- 239000006227 byproduct Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 6
- 230000000740 bleeding effect Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000001603 reducing effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000008030 superplasticizer Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鉱物質微粉末及び
微粒分の欠如した細骨材を用いて、良好な流動性を有
し、強度の発現にも優れるモルタル及びコンクリ−ト組
成物に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mortar and concrete composition having good flowability and excellent strength, which is produced by using finely divided mineral powder and fine aggregate lacking fine particles. It is a thing.
【０００２】[0002]
【従来の技術】コンクリ−ト用混和材としては、フライ
アッシュや高炉スラグ微粉末、シリカ質微粉末等の鉱物
質微粉末が主に用いられており、フライアッシュ等を適
量添加することによりワ−カビリテイが向上し、養生期
間中にポゾラン反応が促進してモルタル及びコンクリ−
ト組織が緻密化し、長期強度が向上する。さらには、水
和発熱を緩和するなどの効果が得られる。また、鉱物質
微粉末をセメントの外割りで混用した場合には粉体量が
非常に多くなり、保水効果が向上しブリ−ジングはほと
んど発生せず、粘性が高くなり材料分離抵抗性も増す。
ところが、フライアッシュ等の鉱物質微粉末の比重は一
般に砂よりも小さいため、通常のコンクリ−トと比較し
て単位容積質量が軽く弾性係数の低いモルタル及びコン
クリ−トとなり、用途が限られている。また、鉱物質微
粉末を所定量以上添加すると、ワ−カビリテイは逆に低
下し、コンクリ−トに所要のワ−カビリテイを得るため
には混和剤添加量を増加させなければならなくなりコス
トアップとなる。2. Description of the Related Art Mineral fine powders such as fly ash, blast furnace slag fine powder, and siliceous fine powder are mainly used as admixtures for concrete, and by adding an appropriate amount of fly ash, etc. -Improves moldability and promotes the pozzolanic reaction during curing to improve mortar and concrete-
The densified structure improves the long-term strength. Further, effects such as alleviation of heat of hydration can be obtained. In addition, when the fine powder of mineral substances is mixed with the outside of cement, the powder amount becomes very large, the water retention effect is improved, bleeding hardly occurs, the viscosity becomes high and the material separation resistance also increases. .
However, since the specific gravity of fine mineral powders such as fly ash is generally smaller than that of sand, the unit volume mass is lighter and the modulus of elasticity is lower than that of ordinary concrete, resulting in mortar and concrete with limited applications. There is. On the other hand, if a fine powder of a mineral substance is added in a predetermined amount or more, the workability is decreased, and in order to obtain the workability required for the concrete, it is necessary to increase the addition amount of the admixture and the cost is increased. Become.
【０００３】一方、コンクリ−ト用の細骨材としては山
砂や川砂が用いられてきたが、良質な砂が入手困難のた
め、最近では海砂や砕砂なども用いられている。また、
粒度がばらついたり、微粒分の欠如した劣悪な細骨材
や、産業副産物を利用して製造した人工骨材を天然砂と
混合したり、代替して用いている。On the other hand, as fine aggregate for concrete, mountain sand and river sand have been used, but recently, sea sand and crushed sand have been used because high quality sand is difficult to obtain. Also,
Poor fine aggregates with varying particle size and lack of fine particles, and artificial aggregates manufactured using industrial by-products are mixed with natural sand or used in place of them.
【０００４】[0004]
【発明が解決しようとする課題】鉱物質微粉末を細骨材
の一部に置換した前記モルタル及びコンクリ−トは、本
出願人が先に特許出願した特願平６−３３０６５２号に
示すように高強度が達成できるが、通常のモルタル及び
コンクリ−トと比較して軽量であり弾性係数が低いた
め、やや適用範囲も狭められてしまう。また、コンクリ
−トの粒状材料のうち微粒分が非常に多くなりるため流
動性が損なわれ、これに対処するため混和剤添加量が増
加する傾向にある。The mortar and concrete in which the fine mineral powder is replaced with a part of the fine aggregate are disclosed in Japanese Patent Application No. 6-330652 filed by the present applicant. Although high strength can be achieved, it is lighter in weight and has a lower elastic modulus than ordinary mortar and concrete, so that the applicable range is somewhat narrowed. Further, since the fine particles in the granular material of the concrete become very large, the fluidity is impaired, and the amount of the admixture added tends to increase in order to cope with this.
【０００５】[0005]
【課題を解決するための手段】本発明は、セメント、骨
材、鉱物質微粉末及び水を用いるモルタル及びコンクリ
−ト、中でも鉱物質微粉末を多量に用いるモルタル及び
コンクリ−トにおいて微粒分の欠如した細骨材を混用す
ることにより、これら各材料の配合量を適切に調整し
て、ワ−カビリテイに優れ、通常のモルタル及びコンク
リ−トと同等以上の性能を有するモルタル及びコンクリ
−トを得たものである。The present invention is directed to mortars and concretes using cement, aggregate, finely divided mineral powder and water, and particularly to mortars and concretes containing large amounts of finely divided mineral powder. By mixing the lacking fine aggregate, the amount of each of these materials can be adjusted appropriately to provide mortar and concrete with excellent workability and performance equivalent to or better than ordinary mortar and concrete. That is what I got.
【０００６】すなわち、本発明によれば、以下の構成か
らなるモルタル及びコンクリ−ト組成物が提供される。 （１） 鉱物質微粉末及び微粒分の欠如した細骨材を用
いることを特徴とするモルタル及びコンクリ−ト組成
物。 （２） 微粒分の欠如した細骨材がフェロニッケルスラ
グ細骨材でることを特徴とする上記（１）に記載のモル
タル及びコンクリ−ト組成物。 （３）フェロニッケルスラグ細骨材が、電炉風砕するこ
とによって得られる粒径０．３〜５mmの球状粒子である
ことを特徴とする（１）または（２）に記載のモルタル
及びコンクリ−ト組成物。 （４） 鉱物質微粉末が、天然鉱物質微粉末、または人
工鉱物質微粉末である上記（１）〜（３）のいずれかに
記載のモルタル及びコンクリ−ト組成物。 （５） 鉱物質微粉末がフライアッシュである上記
（１）〜（４）のいずれかに記載のモルタル及びコンク
リ−ト組成物。 （６） セメントが、普通ポルトランドセメントまたは
早強ポルトランドセメントである上記（１）〜（５）の
いずれかに記載のモルタル及びコンクリ−ト組成物。 （７） 高性能減水剤を含むことを特徴とする上記
（１）〜（６）のいずれかに記載のモルタル及びコンク
リ−ト組成物。That is, according to the present invention, there is provided a mortar and concrete composition having the following constitution. (1) A mortar and concrete composition characterized by using a fine mineral powder and fine aggregate lacking fine particles. (2) The mortar and concrete composition as described in (1) above, wherein the fine aggregate lacking fine particles is a ferronickel slag fine aggregate. (3) The ferronickel slag fine aggregate is a spherical particle having a particle size of 0.3 to 5 mm obtained by blasting with an electric furnace, and the mortar and concrete according to (1) or (2). Composition. (4) The mortar and concrete composition according to any one of (1) to (3) above, wherein the mineral fine powder is a natural mineral fine powder or an artificial mineral fine powder. (5) The mortar and concrete composition according to any one of the above (1) to (4), wherein the fine mineral powder is fly ash. (6) The mortar and concrete composition according to any one of (1) to (5) above, wherein the cement is ordinary Portland cement or early-strength Portland cement. (7) The mortar and concrete composition according to any one of (1) to (6) above, which comprises a high-performance water reducing agent.
【０００７】[0007]
【発明の実施の形態】微粒分の欠如した細骨材は、０．
６mm以下の微粒分が２０重量％以下の細骨材であれば使
用できる。この微粒分が２０重量％を上回るとコンクリ
ートの流動性が損なわれ好ましくない。微粒分の欠如し
た細骨材としては、天然細骨材、あるいは高炉スラグや
フェロニッケルスラグ等の産業副産物を原料として製造
された人工細骨材のいずれも用いることができる。中で
も、フェロニッケル製造時に副産される電炉風砕された
０．３〜５mmのフェロニッケルスラグ細骨材は球状粒子
であり、モルタル及びコンクリ−ト材料として用いると
ワ−カビリテイが向上し、また、産業副産物の有効利用
にもなり好適に使用できる。後述する鉱物質微粉末を多
量に使用するモルタル及びコンクリ−トにおいて、微粒
分の欠如した細骨材を併用することにより微粒分が補足
され流動性に優れ、緻密化したモルタル及びコンクリ−
トが得られる。微粒分の欠如した細骨材の使用量は、１
４０リットル／m3を下回ると粗骨材容積の占める割合が大き
く砂利っぽいコンクリ−トとなり、また３００リットル／m3
を上回ると、粗骨材容積が減りモルタル部分の多いコン
クリ−トとなり、強度低下の原因にもなる。よって、微
粒分の欠如した細骨材は、１４０〜３００リットル／m3、好
ましくは１７０〜２５０リットル／m3の範囲の使用量が望ま
しい。BEST MODE FOR CARRYING OUT THE INVENTION
Fine aggregates of 6 mm or less and 20% by weight or less of fine aggregate can be used. If this fine particle content exceeds 20% by weight, the fluidity of concrete is impaired, which is not preferable. As the fine aggregate lacking fine particles, either natural fine aggregate or artificial fine aggregate produced from industrial by-products such as blast furnace slag and ferronickel slag can be used. Among them, the 0.3-5 mm ferronickel slag fine aggregate, which is a by-product of electric furnace blasting during the production of ferronickel, is a spherical particle, and when it is used as a mortar and a concrete material, the workability is improved, and Also, it can be used favorably because it can be effectively used as an industrial by-product. In the mortar and concrete that uses a large amount of fine mineral powders described later, by combining fine aggregates lacking fine particles, fine particles are captured and excellent in fluidity, and densified mortar and concrete
You get The amount of fine aggregate lacking fine particles is 1
Below 40 l / m 3 when Sohone material ratio ish large gravel occupied volume concrete - becomes DOO, also 300 l / m 3
If it exceeds, the volume of coarse aggregate decreases and the concrete has a large amount of mortar, which also causes a decrease in strength. Therefore, the amount of fine aggregate lacking fine particles is preferably 140 to 300 liters / m 3 , and more preferably 170 to 250 liters / m 3 .
【０００８】鉱物質微粉末としては、セメント粒子とほ
ぼ同程度の粒径を有する各種岩石粉末、珪藻土、天然ポ
ゾラン等の天然鉱物質微粉末あるいは、高炉スラグ微粉
末やフライアッシュ、シリカ微粉末等の人工鉱物質微粉
末のいずれでも用いることができる。中でも大部分が埋
め立て等の廃棄処分されるフライアッシュの使用は、資
源リサイクルの面からも好適に使用される。ここでフラ
イアッシュは、ＪＩＳで規定される範囲はもちろんのこ
と、通常原粉と称されるフライアッシュやシンダ−アッ
シュをも含むものである。As the fine mineral powder, various rock powders having a particle size approximately the same as that of cement particles, fine natural mineral powder such as diatomaceous earth and natural pozzolan, blast furnace slag fine powder, fly ash, silica fine powder, etc. Any of the artificial fine powders of artificial minerals can be used. Above all, the use of fly ash, which is mostly disposed of as landfill, is preferably used from the viewpoint of resource recycling. Here, the fly ash includes not only the range specified by JIS but also the fly ash and the cinder ash which are usually called raw powder.
【０００９】使用されるセメントには、普通、早強、超
早強、中庸熱、耐硫酸塩、白色等の各種ポルトランドセ
メントが含まれるが、初期並びに長期強度発現性の改善
に大きな効果を発揮するためには、望ましくは普通ポル
トランドセメントあるいは早強ポルトランドセメントが
適当である。また、フライアッシュセメント等の混合セ
メントを用いることもできる。The cement used includes various portland cements such as normal, early strength, ultra-early strength, moderate heat, sulfate resistant, white, etc., but exerts a great effect on the improvement of initial and long-term strength development. For this purpose, normal Portland cement or early-strength Portland cement is preferably suitable. Further, a mixed cement such as fly ash cement can be used.
【００１０】本発明のモルタル及びコンクリ−ト組成物
には高性能減水剤を添加することができる。高性能減水
剤としては、従来よりモルタル及びコンクリ−ト用混和
剤として用いられている、例えばアルキルアリル系、ナ
フタリン系、メラミン系、トリアジン系の化学組成を有
するものであればいずれも使用できるが、好ましくはポ
リカルボン酸塩系の混和剤が良好である。空気連行性能
を有する高性能ＡＥ減水剤ないし空気連行剤も使用する
ことができる。これら高性能減水剤の添加量は使用する
ポルトランドセメント、骨材、鉱物質微粉末及び所要の
減水効果などを勘案して調整されるが、一般には、ポル
トランドセメント１００重量部に対して０．１〜１０重
量％が適当である。０．１重量％未満では減水効果が実
質上無くまた１０重量％を超えて添加しても減水性、流
動性の改善効果が頭打ちとなる。A superplasticizer can be added to the mortar and concrete composition of the present invention. As the high-performance water reducing agent, any one conventionally used as an admixture for mortar and concrete, for example, an alkylallyl-based, naphthalene-based, melamine-based, or triazine-based chemical composition can be used. A polycarboxylic acid salt-based admixture is preferable. A high performance AE water reducing agent or air entraining agent having air entraining performance can also be used. The addition amount of these high-performance water reducing agents is adjusted in consideration of Portland cement to be used, aggregate, fine powder of mineral matter, required water reducing effect, and the like. In general, 0.1 to 0.1 part by weight of Portland cement is used. 10 to 10% by weight is suitable. If it is less than 0.1% by weight, the effect of reducing water is practically nil.
【００１１】なお、本発明のモルタル及びコンクリ−ト
組成物には、以上の配合成分のほかに、通常、コンクリ
−トにおいて用いられる急硬・急結材、高強度混和剤、
水和促進剤、凝結調整剤等の各種コンクリ−ト混和材料
や補強材としての各種繊維、鋼等も使用することができ
る。In the mortar and concrete composition of the present invention, in addition to the above-mentioned components, a rapid hardening / quick binding material, a high-strength admixture usually used in concrete,
Various concrete admixture materials such as hydration accelerators and setting regulators, various fibers as reinforcing materials, steel and the like can also be used.
【００１２】上記各材料のモルタル及びコンクリ−ト組
成物において、鉱物質微粉末／粉体比は、セメントと鉱
物質微粉末の合計量に対する鉱物質微粉末の重量比で表
されるが、この鉱物質微粉末／粉体比が７０体積％を上
回るとセメントペ−ストの粘性及び付着性が高く、鉱物
質微粉末のベアリング効果により緩やかに流動するもの
のワ−カビリテイが非常に悪い。この場合高性能減水剤
の添加量を増すとペ−ストの流動性は向上するが、材料
分離を引き起こす。したがって、鉱物質微粉末／粉体比
は７０体積％以下とする。また、セメントと鉱物質微粉
末の合計量である単位粉体量は、２５０リットル/m3 を上回
ると高粘性となり作業性が悪化するので２５０リットル/m3
以下が望ましい。In the mortar and concrete composition of each of the above materials, the mineral fine powder / powder ratio is represented by the weight ratio of the mineral fine powder to the total amount of cement and the mineral fine powder. When the fine mineral powder / powder ratio exceeds 70% by volume, the cement paste has high viscosity and adhesion, and the fine mineral powder causes a gradual flow due to the bearing effect, but the workability is very poor. In this case, increasing the amount of the high-performance water reducing agent improves the fluidity of the paste, but causes material separation. Therefore, the mineral fine powder / powder ratio is 70% by volume or less. The unit powder quantity is the total amount of cement and mineral fine powder, 250 l / m 3 because the high viscosity and becomes workability is deteriorated to exceed 250 l / m 3
The following is desirable.
【００１３】コンクリ−トにおいて、１m3あたりの単位
粗骨材量は単位粗骨材容積が５５０リットルを上回ると骨材
が相互に噛み合いがちになり良好なセメントペ−ストを
作成してもスランプ上部が崩れ落ちてしまう。したがっ
て、単位粗骨材容積は５５０リットル以下、好ましくは４０
０リットル以下である。In the concrete, when the unit coarse aggregate volume per 1 m 3 exceeds the unit coarse aggregate volume of 550 liters, the aggregates tend to mesh with each other, and even if a good cement paste is produced, the slump upper part Will collapse. Therefore, the unit coarse aggregate volume is 550 liters or less, preferably 40
It is 0 liters or less.
【００１４】上記各成分の混合及び混練方法に制限は無
く、均一に混練できればよく、配合成分の添加順序にも
特に制限されるものではない。There is no limitation on the method of mixing and kneading the above-mentioned components, as long as the components can be uniformly kneaded, and the order of adding the components is not particularly limited.
【００１５】[0015]
【実施例】以下に本発明の実施例を示す。なお、本例は
例示であり、本発明の範囲を限定するものではない。Examples of the present invention will be described below. It should be noted that this example is merely an example and does not limit the scope of the present invention.
【００１６】下記に示す材料及び表１に示す配合にした
がってコンクリ−トを調整し、ブリ−ジング量・圧縮強
度・弾性係数及び引張（割裂）強度を測定した。試験結
果を表２に示す。なお、混練方法は従来と同様の方法で
行い、スランプを１８０mm、空気量を４．５％に調整
し、かつ材料分離のない範囲の高性能ＡＥ減水剤添加量
が得られた時点で供試体を作成した。また、比較として
鉱物質微粉末と陸砂を用いた供試体も作成し、上記と同
様の試験を行った。Concretes were prepared according to the materials shown below and the formulations shown in Table 1, and the bleeding amount, compressive strength, elastic modulus and tensile (splitting) strength were measured. The test results are shown in Table 2. The kneading method was the same as the conventional method, the slump was adjusted to 180 mm, the air amount was adjusted to 4.5%, and the amount of the high performance AE water reducing agent added within the range without material separation was obtained. It was created. In addition, as a comparison, a specimen using fine mineral powder and land sand was also prepared, and the same test as above was performed.
【００１７】 使用材料 セメント：普通ポルトランドセメント 鉱物質微粉末：フライアッシュ（火力発電所産） 比重：２．１６、比表面積：３１３０cm2/g 細骨材：フェロニッケルスラグ（０．３〜５mm） 太平洋金属八戸製造所製（電炉風砕品） 比重（絶乾）：２．８５、粗粒率：４．０７ 実積率：６８．２ ：陸砂（静岡産）、比重（表乾）：２．５９ 粗粒率：２．７５、実積率：６８．２ 粗骨材：砕石２００５（茨城産）、比重（表乾）：２．６４ 粗粒率：６．６６、実積率：６１．５ 高性能ＡＥ減水剤：竹本油脂社製 商品名 ０ＮＤ−１１ 空気量調整剤：竹本油脂社製 商品名 ＬＥ−４０２Materials used Cement: Ordinary Portland cement Mineral fine powder: Fly ash (from thermal power plant) Specific gravity: 2.16, Specific surface area: 3130 cm 2 / g Fine aggregate: Ferronickel slag (0.3-5 mm) Pacific Metal Hachinohe Factory (Electric furnace crushed product) Specific gravity (extremely dry): 2.85, Coarse grain ratio: 4.07 Actual volume ratio: 68.2: Land sand (Shizuoka product), Specific gravity (surface dry): 2 .59 Coarse grain ratio: 2.75, actual volume ratio: 68.2 Coarse aggregate: Crushed stone 2005 (produced in Ibaraki), Specific gravity (surface dry): 2.64 Coarse grain ratio: 6.66, Actual volume ratio: 61 .5 High-performance AE water reducing agent: Takemoto Yushi Co., Ltd. trade name 0ND-11 Air content regulator: Takemoto Yushi Co., Ltd. trade name LE-402
【００１８】[0018]
【表１】 [Table 1]
【００１９】[0019]
【表２】 [Table 2]
【００２０】本発明のコンクリ−ト組成物は、表２に示
すようにブリ−ジングが極少量におさえられている。一
般に、フェロニッケルスラグ細骨材をコンクリ−トに用
いると、粒度分布等が影響しブリ−ジングが増加する
が、鉱物質微粉末と併用することにより極力おさえるこ
とができる。実施例１と比較例１は、細骨材の種類だけ
を相違させた同体積の配合であるが、フェロニッケルス
ラグ細骨材を用いた実施例１では、比較例１と同様のワ
−カビリテイを得るための高性能ＡＥ減水剤の添加量を
半減することができる。言い換えれば、同量の高性能Ａ
Ｅ減水剤の添加でより多量のフライアッシュを混入する
ことが可能となる。これは、フェロニッケルスラグ細骨
材が球形粒子であるためベアリング効果により流動性が
良好になりフライアッシュが細骨材の微粒分の代わりを
するためである。また、フェロニッケルスラグ細骨材の
比重が陸砂よりも大きいことからコンクリ−トの単位容
積質量は重くなり、通常のコンクリ−トにより近くな
り、適用範囲も拡大される。The concrete composition of the present invention has a very small amount of bleeding as shown in Table 2. Generally, when the ferronickel slag fine aggregate is used for the concrete, the bleeding increases due to the influence of the particle size distribution and the like, but it can be suppressed as much as possible by using it together with the fine mineral powder. Example 1 and Comparative Example 1 have the same volume of composition except for the type of fine aggregate, but in Example 1 using ferronickel slag fine aggregate, the same workability as Comparative Example 1 was used. It is possible to halve the amount of the high-performance AE water reducing agent added to obtain In other words, the same amount of high performance A
E It becomes possible to mix a larger amount of fly ash by adding the water reducing agent. This is because the ferro-nickel slag fine aggregate is spherical particles, so that the fluidity is improved by the bearing effect, and the fly ash substitutes for the fine aggregate of fine aggregate. Further, since the specific gravity of the ferronickel slag fine aggregate is larger than that of land sand, the unit volume mass of the concrete becomes heavier, and the concrete volume becomes closer to that of a normal concrete, and the applicable range is expanded.
【００２１】次に、強度特性をみると、圧縮強度・弾性
係数及び引張（割裂）強度のいずれもが、通常のコンク
リ−ト及び細骨材に鉱物質微粉末と陸砂を併用したコン
クリ−トの強度及び弾性係数を凌駕している。よって、
本発明のコンクリ−ト組成物は、産業副産物を多量に有
効利用し、かつ通常のコンクリ−トと比較しても同等も
しくはそれ以上の強度特性を備えているコンクリ−トで
ある。Looking at the strength characteristics, the compressive strength, elastic modulus, and tensile (splitting) strength are all found in ordinary concrete and fine aggregate in which mineral fine powder and land sand are used in combination. It exceeds the strength and elastic modulus of the grate. Therefore,
The concrete composition of the present invention is a concrete composition which makes effective use of a large amount of industrial by-products and has strength properties equal to or higher than those of ordinary concrete products.
【００２２】[0022]
【発明の効果】本発明のモルタル及びコンクリ−ト組成
物は、鉱物質微粉末と微粒分の欠如したむしろ通常のコ
ンクリ−トには適さない細骨材を用い、鉱物質微粉末と
微粒分の欠如した細骨材との混合割合を調整することに
より、ワ−カビリテイに優れ、しかも、ブリ−ジング量
が大きいという微粒分の欠如した細骨材の欠点を解消す
ることができる。また、圧縮強度・弾性係数及び引張
（割裂）強度において、一般のモルタル及びコンクリ−
トと同等もしくはそれ以上の性能を有するので、適用範
囲も広くなる。また、処分に困っているフェロニッケル
スラグ等の微粒分の欠如した細骨材や、鉱物質微粉末と
してフライアッシュ等を使用すれば産業副産物の有効利
用も達成される。INDUSTRIAL APPLICABILITY The mortar and concrete composition of the present invention uses a fine aggregate which lacks fine mineral powder and fine particles and is rather unsuitable for ordinary concrete. By adjusting the mixing ratio with the fine aggregate lacking fine particles, the defect of fine aggregate lacking fine particles, which is excellent in workability and has a large bleeding amount, can be eliminated. In addition, in terms of compressive strength, elastic modulus and tensile (splitting) strength, general mortar and concrete
Since it has performance equivalent to or better than that of G.T., it has a wide application range. Further, by using fine aggregate lacking fine particles such as ferronickel slag, which is difficult to dispose of, or fly ash, etc. as fine powder of mineral substances, effective utilization of industrial by-products can be achieved.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小谷中 昭裕 千葉県佐倉市大作二丁目４番２号 秩父小 野田株式会社中央研究所内 (72)発明者 佐藤 宏一郎 千葉県佐倉市大作二丁目４番２号 秩父小 野田株式会社中央研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akihiro Oyanaka 2-4-2 Daisaku Sakura, Chiba Prefecture Chichibu Onoda Central Research Institute (72) Inventor Koichiro Sato 2-4-2 Daisaku Sakura, Chiba Prefecture No. 2 Chichibu Onoda Central Research Institute
Claims (7)
材を用いることを特徴とするモルタル及びコンクリ−ト
組成物。1. A mortar and concrete composition characterized by using a fine mineral powder and a fine aggregate lacking fine particles.
ルスラグ細骨材であることを特徴とする請求項１に記載
のモルタル及びコンクリ−ト組成物。2. The mortar and concrete composition according to claim 1, wherein the fine aggregate lacking fine particles is ferronickel slag fine aggregate.
砕されることによって得られる０．３〜５mmの球状粒子
であることを特徴とする請求項１または２に記載のモル
タル及びコンクリ−ト組成物。3. The mortar and concrete according to claim 1, wherein the ferronickel slag fine aggregate is spherical particles of 0.3 to 5 mm obtained by blasting with an electric furnace. Composition.
は人工鉱物質微粉末である請求項１〜３のいずれかに記
載のモルタル及びコンクリ−ト組成物。4. The mortar and concrete composition according to claim 1, wherein the fine mineral powder is a natural fine mineral powder or an artificial fine mineral powder.
求項１〜４のいずれかに記載のモルタル及びコンクリ−
ト組成物。5. The mortar and concrete according to claim 1, wherein the fine mineral powder is fly ash.
Composition.
または早強ポルトランドセメントである請求項１〜５の
いずれかに記載のモルタル及びコンクリ−ト組成物。6. The mortar and concrete composition according to claim 1, wherein the cement is ordinary Portland cement or early-strength Portland cement.
求項１〜６のいずれかに記載のモルタル及びコンクリ−
ト組成物。7. The mortar and concrete according to claim 1, further comprising a high-performance water reducing agent.
Composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22464495A JPH0952744A (en) | 1995-08-09 | 1995-08-09 | Mortar and concrete composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22464495A JPH0952744A (en) | 1995-08-09 | 1995-08-09 | Mortar and concrete composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0952744A true JPH0952744A (en) | 1997-02-25 |
Family
ID=16816955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22464495A Pending JPH0952744A (en) | 1995-08-09 | 1995-08-09 | Mortar and concrete composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0952744A (en) |
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|---|---|---|---|---|
| JP2008150227A (en) * | 2006-12-14 | 2008-07-03 | Central Res Inst Of Electric Power Ind | Fine aggregate for concrete and concrete |
| JP2008260672A (en) * | 2007-03-19 | 2008-10-30 | Ube Ind Ltd | Hydraulic composition |
| JP2009030427A (en) * | 2007-06-22 | 2009-02-12 | Ube Ind Ltd | Seismic reinforcement method |
| KR101247707B1 (en) * | 2010-11-05 | 2013-03-25 | 한국세라믹기술원 | Additive for cement, mortar and concrete comprising ferronickel slag |
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| WO2019138879A1 (en) * | 2018-01-10 | 2019-07-18 | 三井住友建設株式会社 | Mortar and method for manufacturing same |
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-
1995
- 1995-08-09 JP JP22464495A patent/JPH0952744A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008150227A (en) * | 2006-12-14 | 2008-07-03 | Central Res Inst Of Electric Power Ind | Fine aggregate for concrete and concrete |
| JP2008260672A (en) * | 2007-03-19 | 2008-10-30 | Ube Ind Ltd | Hydraulic composition |
| JP2012246221A (en) * | 2007-03-19 | 2012-12-13 | Ube Industries Ltd | Hydraulic composition, method for using the same, method for producing hydraulic mortar and method for producing hydraulic mortar hardened body |
| JP2009030427A (en) * | 2007-06-22 | 2009-02-12 | Ube Ind Ltd | Seismic reinforcement method |
| KR101247707B1 (en) * | 2010-11-05 | 2013-03-25 | 한국세라믹기술원 | Additive for cement, mortar and concrete comprising ferronickel slag |
| JP2014129213A (en) * | 2012-12-29 | 2014-07-10 | Taiheiyo Material Kk | Fast-curing grout composition and fast-curing grout material |
| JP2015221734A (en) * | 2014-05-23 | 2015-12-10 | Ｊｆｅミネラル株式会社 | Concrete composition |
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| JP2022015947A (en) * | 2020-07-10 | 2022-01-21 | 三井住友建設株式会社 | Fiber reinforced cement composition |
| WO2022014045A1 (en) * | 2020-07-17 | 2022-01-20 | 三井住友建設株式会社 | Composition containing aggregates, binder, and water |
| JPWO2022014108A1 (en) * | 2020-07-17 | 2022-01-20 | ||
| WO2022014108A1 (en) * | 2020-07-17 | 2022-01-20 | 三井住友建設株式会社 | Composition containing aggregate, binder, and water |
| CN116157372A (en) * | 2020-07-17 | 2023-05-23 | 三井住友建设株式会社 | Composition comprising aggregate, binding material and water |
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