JPH06340460A - Fiber cement board - Google Patents
Fiber cement boardInfo
- Publication number
- JPH06340460A JPH06340460A JP12575893A JP12575893A JPH06340460A JP H06340460 A JPH06340460 A JP H06340460A JP 12575893 A JP12575893 A JP 12575893A JP 12575893 A JP12575893 A JP 12575893A JP H06340460 A JPH06340460 A JP H06340460A
- Authority
- JP
- Japan
- Prior art keywords
- csf
- fiber
- pulp
- cement board
- pulp fibers
- 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
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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/241—Paper, e.g. waste paper; Paper pulp
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば、屋根材や壁材
等の建材として使用することができる繊維セメント板に
関し、更に詳しくは、配合材にセメント及びパルプ繊維
材及び骨材を含む繊維セメント板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber cement board which can be used as a building material such as a roofing material or a wall material, and more specifically, a fiber containing cement and pulp fiber material and aggregate as a compounding material. Regarding cement board.
【０００２】[0002]
【従来の技術】パルプ繊維材は、前記配合材の中で繊維
としての特性を発揮して、強度の増加を図るのに大きな
役割があり、そのパルプ繊維材の物性を表現する一つの
値として、繊維の叩解程度に応じた毛羽立ち状態を表す
ＣＳＦ（ＣａｎａｄｉａｎＳｔａｎｄａｒｄＦｒｅｅｎ
ｅｓｓ＝濾水度ともいいミリリットルの単位で示され
る）があり、このＣＳＦは小さいほど、高叩解で繊維の
比表面積が大きい状態であり、また、ＣＳＦが大きいほ
ど低叩解状態であることを示すものである。従来、この
種の繊維セメント板としては、セメント及び骨材と共に
配合するパルプ繊維材に、ほぼ一定のＣＳＦのものを用
いていた。2. Description of the Related Art Pulp fiber material plays a major role in increasing the strength by exerting the characteristics of a fiber in the above-mentioned compounded material, and is one of the values expressing the physical properties of the pulp fiber material. , CSF (Canadian Standard Freen) indicating the fluffing state according to the beating degree of the fiber
ess = freeness, which is also expressed in the unit of milliliter), and the smaller the CSF, the higher the beating condition and the larger the specific surface area of the fiber, and the larger the CSF, the lower the beating condition. It is a thing. Conventionally, as this type of fiber cement board, a pulp fiber material mixed with cement and aggregate has a substantially constant CSF.
【０００３】[0003]
【発明が解決しようとする課題】パルプ繊維材を配合し
て造った例えば屋根材の場合、当然のことながら、充分
な強度を備えていることが重要であるとと共に、野地板
上に敷設する関係上、作業をする人が屋根材の上に載っ
て敷設作業をしても、柔軟にその重量を受け止めること
ができる撓み特性を備えていることも重要である。この
強度及び撓み特性を左右する要因の一つに、パルプ繊維
のＣＳＦがあげられ、上述したとおり、パルプ繊維のＣ
ＳＦが小さいほど繊維の比表面積が大きくなって、セメ
ントや骨材との付着力を大きく期待でき、高い強度特性
を発揮することができる。しかしその反面、ＣＳＦが小
さい（高叩解）ほど、各繊維の長さが短くなって、撓み
に対する粘りが少なくなり、撓み特性が低下する傾向が
強くなる。即ち、一定のＣＦＳのパルプ繊維材を配合す
る従来の繊維セメント板によれば、強度特性を追求する
ためにＣＳＦの小さい繊維材を用いれば、撓み特性が低
下し、一方、撓み特性を追求するためにＣＳＦの大きい
パルプ繊維材を用いれば、強度特性が低下するという問
題点があり、だからといって、配合するパルプ繊維材の
配合量を増加すると、繊維セメント板そのものの難燃性
が低下するという新たな問題点が生じることになり、前
記強度特性・撓み特性・難燃性の向上をすべて満たすこ
とができなかった。In the case of, for example, a roofing material made by blending a pulp fiber material, it is naturally important that the material has sufficient strength, and it is laid on a field board. For this reason, it is also important that the person who has the work flexibly receives the weight of the roof material even if he / she is laying the roof material on the roof material. One of the factors that influence the strength and the bending characteristics is the CSF of the pulp fiber.
The smaller the SF is, the larger the specific surface area of the fiber is, the larger the adhesive force with the cement or the aggregate can be expected, and the higher strength characteristics can be exhibited. However, on the other hand, the smaller the CSF (high beating), the shorter the length of each fiber, the less tenacity against bending, and the more the bending characteristics tend to deteriorate. That is, according to the conventional fiber cement board in which a certain amount of CFS pulp fiber material is blended, if a fiber material having a small CSF is used in order to pursue the strength characteristics, the bending characteristics are lowered, while the bending characteristics are pursued. Therefore, if a pulp fiber material having a large CSF is used, there is a problem that the strength characteristics are deteriorated. However, if the amount of the pulp fiber material to be mixed is increased, the flame retardancy of the fiber cement board itself is decreased. However, various problems have occurred, and it has not been possible to satisfy all of the aforementioned improvements in strength characteristics, bending characteristics, and flame retardancy.
【０００４】従って、本発明の目的は、上記問題点を解
消し、優れた強度特性、及び、撓み特性を共に備え、且
つ、難燃性の高い繊維セメント板を提供するところにあ
る。Therefore, an object of the present invention is to solve the above-mentioned problems, and to provide a fiber cement board which has both excellent strength characteristics and bending characteristics and is highly flame-retardant.
【０００５】[0005]
【課題を解決するための手段】この目的を達成するため
の本発明における繊維セメント板の特徴構成は、セメン
ト及び骨材と共に配合されるパルプ繊維材として、ＣＳ
Ｆの大きいものと、ＣＳＦの小さいものとを混在させて
あるところにある。To achieve this object, the fiber cement board according to the present invention is characterized in that CS fiber is a pulp fiber material mixed with cement and aggregate.
The one with a large F and the one with a small CSF are mixed.
【０００６】尚、前記パルプ繊維材は、針葉樹から造ら
れたパルプで、且つ、６ｗｔ％以下の配合量で、且つ、
ＣＳＦが６５０ミリリットル以上のパルプ繊維（Ａ）
と、ＣＳＦが２００ミリリットル以下のパルプ繊維
（Ｂ）とを混在させ、且つ、前記両パルプ繊維の配合比
率（Ａ／Ｂ）を２５／７５〜６０／４０ｗｔ％に設定し
てあることが好ましく、また、前記骨材は、シリカが主
成分であることが好ましい。The pulp fiber material is pulp made from softwood, and has a compounding amount of 6 wt% or less, and
Pulp fiber (A) with CSF of 650 ml or more
And pulp fibers (B) having a CSF of 200 ml or less are mixed, and the blending ratio (A / B) of both pulp fibers is preferably set to 25/75 to 60/40 wt%, Further, the aggregate preferably contains silica as a main component.
【０００７】[0007]
【作用】本発明における繊維セメント板の特徴構成によ
れば、配合されるパルプ繊維材として、ＣＳＦの大きい
パルプ繊維と、ＣＳＦの小さいパルプ繊維とを混在させ
てあるから、繊維セメント板の強度特性の向上に関して
は、ＣＳＦの小さいパルプ繊維が寄与し、繊維セメント
板の撓み特性の向上に関しては、ＣＳＦの大きいパルプ
繊維が寄与し、効果的に両パルプ繊維が役割分担するこ
とによって、少ないパルプ繊維材の配合量で、繊維セメ
ント板の強度特性・撓み特性を共に増強することが可能
となる。また、パルプ繊維材の配合量を少なくできるこ
とによって、燃え難い製品とすることが可能となる。According to the characteristic construction of the fiber cement board in the present invention, since pulp fibers having a large CSF and pulp fibers having a small CSF are mixed as the pulp fiber material to be blended, the strength characteristics of the fiber cement board. Pulp fibers having a small CSF contribute to the improvement of the pulp property, and pulp fibers having a large CSF contribute to the improvement of the bending characteristics of the fiber cement plate, and the pulp fibers having a small amount are effectively contributed by the pulp fibers. It is possible to enhance both the strength characteristics and the bending characteristics of the fiber cement board by adjusting the blending amount of the material. Further, since the blending amount of the pulp fiber material can be reduced, it becomes possible to make a product that is difficult to burn.
【０００８】尚、前記パルプ繊維材は、針葉樹から造ら
れたパルプで、且つ、６ｗｔ％以下の配合量とすること
によって、可燃性であるパルプ繊維材を配合した配合製
品であっても、特に良好にその配合製品の難燃性を確保
することが可能となる。更には、ＣＳＦが６５０ミリリ
ットル以上のパルプ繊維（Ａ）と、ＣＳＦが２００ミリ
リットル以下のパルプ繊維（Ｂ）とを混在させ、且つ、
前記両パルプ繊維の配合比率（Ａ／Ｂ）を２５／７５〜
６０／４０ｗｔ％に設定することによって、特に、屋根
材として好適な強度特性・撓み性特性を備えた繊維セメ
ント板を形成することが可能となり、また、前記骨材の
主成分をシリカとすることによって、配合材中のセメン
トと骨材との結合力がより増大し、高強度で安定した繊
維セメント板を形成することが可能となる。因に、屋根
材として好適な強度・撓み量とは、供試体スパン１５ｃ
ｍで実施される曲げ試験によって、それぞれ次の値をク
リアすることが条件として上げられる。 強度 １９０Ｋｇｆ／ｃｍ2以上 撓み量 １．１ｍｍ以上Even if the pulp fiber material is a pulp made from softwood and has a blending amount of 6 wt% or less, the pulp fiber material is flammable. It becomes possible to ensure the flame retardancy of the blended product satisfactorily. Furthermore, a pulp fiber (A) having a CSF of 650 ml or more and a pulp fiber (B) having a CSF of 200 ml or less are mixed, and
The mixing ratio (A / B) of both pulp fibers is 25 / 75-
By setting it to 60/40 wt%, it becomes possible to form a fiber cement board having strength characteristics and flexibility characteristics which are particularly suitable as a roofing material, and silica is used as the main component of the aggregate. As a result, the bonding force between the cement in the compounding material and the aggregate is further increased, and it becomes possible to form a fiber cement board with high strength and stability. By the way, the strength and bending amount suitable for the roofing material are the test piece span 15c.
The bending test carried out at m is required to satisfy the following values, respectively. Strength 190 Kgf / cm 2 or more Bending amount 1.1 mm or more
【０００９】[0009]
【発明の効果】従って、本発明の繊維セメント板によれ
ば、優れた強度特性、及び、撓み特性を共に確保するこ
とが可能となり、それらの条件を満たしつつ、配合量を
少なくすることによって難燃性を叶えることも可能とな
り、パルプ繊維材を用いた建材の用途を、飛躍的に拡大
することが可能となる。Therefore, according to the fiber cement board of the present invention, it is possible to secure both excellent strength characteristics and bending characteristics, and it is difficult to reduce the compounding amount while satisfying those conditions. It is also possible to achieve flammability, and it is possible to dramatically expand the applications of building materials using pulp fiber materials.
【００１０】[0010]
【実施例】以下に本発明に係わる繊維セメント板の実施
例を説明する。EXAMPLES Examples of the fiber cement board according to the present invention will be described below.
【００１１】本実施例は、繊維セメント板の一例である
屋根材用パルプ繊維補強セメント板であって、湿式抄造
法によって製作され、セメントと、骨材の一例であるシ
リカと、ＣＳＦの異なる二種のパルプ繊維Ａ，Ｂとを基
本配合材として、水と共に混練したスラリーから造られ
ている。因に、前記シリカを基本配合材に配合すること
によって、前記パルプ繊維補強セメント板のオートクレ
ーブ養生において前記シリカがセメントと強く結合し、
全体的な強度特性を増大させることが可能となる。The present embodiment is a pulp fiber reinforced cement board for roof material which is an example of a fiber cement board, which is manufactured by a wet papermaking method, and has cement, silica which is an example of aggregate, and two different CSF. It is made from a slurry in which seed pulp fibers A and B are used as a basic compounding material and kneaded with water. Incidentally, by adding the silica to a basic compounding material, the silica is strongly bonded to cement in the autoclave curing of the pulp fiber reinforced cement plate,
It is possible to increase the overall strength characteristics.
【００１２】こうして造られるパルプ繊維補強セメント
板における、ＣＳＦの異なる二種のパルプ繊維の組合せ
と、それに伴う強度及び撓み量との関係を以下に説明す
る。尚、配合に関しては、セメントとシリカとは、重量
比１：１とし、パルプ繊維材は、針葉樹から造られたも
のを用い、全体の５ｗｔ％の配合量とした。また、一種
類のＣＳＦのパルプ繊維のみを配合した結果も参考とし
て示す。ここで示す記号、Ａ、及び、Ｂは、ＣＳＦの大
きいパルプ繊維、及び、ＣＳＦの小さいパルプ繊維を表
す。The relationship between the combination of two types of pulp fibers having different CSFs and the strength and the amount of flexure associated therewith in the pulp fiber-reinforced cement board thus produced will be described below. Regarding the blending, the weight ratio of cement to silica was 1: 1 and the pulp fiber material was made from softwood, and the blending amount was 5 wt% of the whole. In addition, the result of mixing only one kind of CSF pulp fiber is also shown for reference. The symbols A and B shown here represent a pulp fiber having a large CSF and a pulp fiber having a small CSF.
【００１３】各配合に用いたパルプ繊維は、そのＣＳＦ
を１３０ミリリットル〜７３０ミリリットルまで段階を
経て異なるものを用意し、その内、ＣＳＦの大きいパル
プ繊維Ａと、ＣＳＦの小さいパルプ繊維Ｂとを、それぞ
れ配合比を変えて試験を実施した。その試験結果による
各供試体の強度・撓み量は、表１に示す通りである。The pulp fiber used in each blend is the CSF
Different materials were prepared through steps from 130 ml to 730 ml, and among them, the pulp fiber A having a large CSF and the pulp fiber B having a small CSF were mixed at different compounding ratios and tested. The strength and the amount of flexure of each test piece based on the test results are as shown in Table 1.
【００１４】[0014]
【表１】 [Table 1]
【００１５】尚、表１中の判定結果は、屋根材として好
適な強度・撓み量とされる、強度１９０Ｋｇｆ／ｃｍ2
以上、撓み量１．１ｍｍ以上を、共にクリアするものを
○とし、何れか一方、又は、何れもクリアしないものを
×とした。The judgment results in Table 1 are strength 190 Kgf / cm 2 which is considered to be strength and bending amount suitable for roofing material.
In the above, the amount of deflection of 1.1 mm or more was cleared as ◯, and either one or none was cleared as x.
【００１６】このように、ＣＳＦの異なる二種のパルプ
繊維、特にＣＳＦ６５０ミリリットル以上のものＡとＣ
ＳＦ２００ミリリットル以下のものＢとを、２５／７５
〜６０／４０ｗｔ％の配合比率Ａ／Ｂで混在させたパル
プ繊維材を配合してパルプ繊維補強セメント板を形成す
ることによって、屋根材として好適な強度・撓み量（強
度１９０Ｋｇｆ／ｃｍ2以上、撓み量１．１ｍｍ以上）
を発揮する製品をうみだすことができるものである。ま
た、前記パルプ繊維材のパルプ繊維補強セメント板にお
ける配合量は、難燃性確保の意味から、通常は、上述の
試験に採用した５ｗｔ％が好ましいが、最大でも６ｗｔ
％以下であれば、難燃性を確保することが可能となる。As described above, two kinds of pulp fibers having different CSFs, particularly those having CSF of 650 ml or more, A and C
SF 200ml or less B and 25/75
A pulp fiber reinforced cement board is formed by mixing pulp fiber materials mixed in a mixing ratio A / B of 60 to 40 wt% to obtain a strength / bending amount suitable for a roofing material (strength 190 Kgf / cm 2 or more, Deflection amount 1.1 mm or more)
It is possible to produce a product that exhibits. The content of the pulp fiber material in the pulp fiber reinforced cement board is usually 5 wt% used in the above test from the viewpoint of ensuring flame retardancy, but at most 6 wt.
When it is at most%, flame retardancy can be secured.
【００１７】〔別実施例〕以下に別実施例を説明する。[Other Embodiment] Another embodiment will be described below.
【００１８】〈１〉 前記パルプ繊維材は、先の実施例
で説明した針葉樹から造られたパルプに限るものではな
く、例えば、広葉樹から造られたパルプであってもよ
い。それらを含めて、パルプ繊維材と総称する。<1> The pulp fiber material is not limited to the pulp made from the softwood described in the previous embodiment, and may be, for example, a pulp made from a hardwood. Including them, they are collectively referred to as pulp fiber materials.
【００１９】〈２〉 前記骨材は、先の実施例で説明し
たシリカに限定されるものではなく、例えば、山砂や川
砂や洗い砂や人造骨材等であってもよく、それらを総称
して骨材という。<2> The aggregate is not limited to the silica described in the above embodiment, but may be, for example, mountain sand, river sand, wash sand, artificial aggregate, etc. And called aggregate.
Claims (3)
骨材を含む繊維セメント板であって、 前記パルプ繊維材として、ＣＳＦの大きいものと、ＣＳ
Ｆの小さいものとを混在させてある繊維セメント板。1. A fiber cement board containing cement and pulp fiber material and aggregate as a compounding material, wherein the pulp fiber material has a large CSF, and
Fiber cement board mixed with those with small F.
たパルプで、且つ、６ｗｔ％以下の配合量で、且つ、Ｃ
ＳＦが６５０ミリリットル以上のパルプ繊維（Ａ）と、
ＣＳＦが２００ミリリットル以下のパルプ繊維（Ｂ）と
を混在させ、且つ、前記両パルプ繊維の配合比率（Ａ／
Ｂ）を２５／７５〜６０／４０ｗｔ％に設定してある請
求項１に記載の繊維セメント板。2. The pulp fiber material is pulp made from softwood, and has a blending amount of 6 wt% or less, and C
Pulp fiber (A) with SF of 650 ml or more,
The pulp fiber (B) having a CSF of 200 ml or less is mixed, and the mixing ratio of both pulp fibers (A /
The fiber cement board according to claim 1, wherein B) is set to 25/75 to 60/40 wt%.
項１または請求項２に記載の繊維セメント板。3. The fiber cement board according to claim 1, wherein the aggregate is mainly composed of silica.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12575893A JPH06340460A (en) | 1993-05-27 | 1993-05-27 | Fiber cement board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12575893A JPH06340460A (en) | 1993-05-27 | 1993-05-27 | Fiber cement board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06340460A true JPH06340460A (en) | 1994-12-13 |
Family
ID=14918095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12575893A Pending JPH06340460A (en) | 1993-05-27 | 1993-05-27 | Fiber cement board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06340460A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010120790A (en) * | 2008-11-18 | 2010-06-03 | Ube Ind Ltd | Fiber-mixed board made by paper-making process and producing method of the same |
| WO2011157516A1 (en) | 2010-06-15 | 2011-12-22 | Redco S.A. | Cellulose fibres for fibre-reinforced cement products |
| JP2014514240A (en) * | 2011-05-12 | 2014-06-19 | ジェイムズ ハーディー テクノロジー リミテッド | Fiber blended in three modes in high toughness cementitious composites |
| EP3075715A1 (en) * | 2015-04-03 | 2016-10-05 | Redco NV | Cellulose fiber mixtures and uses thereof for the production of fiber cement compositions and products |
| WO2018011423A1 (en) * | 2016-07-15 | 2018-01-18 | Swisspearl Group Ag | Compositions for the manufacture of flooring elements for indoor use |
-
1993
- 1993-05-27 JP JP12575893A patent/JPH06340460A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010120790A (en) * | 2008-11-18 | 2010-06-03 | Ube Ind Ltd | Fiber-mixed board made by paper-making process and producing method of the same |
| WO2011157516A1 (en) | 2010-06-15 | 2011-12-22 | Redco S.A. | Cellulose fibres for fibre-reinforced cement products |
| JP2014514240A (en) * | 2011-05-12 | 2014-06-19 | ジェイムズ ハーディー テクノロジー リミテッド | Fiber blended in three modes in high toughness cementitious composites |
| EP3075715A1 (en) * | 2015-04-03 | 2016-10-05 | Redco NV | Cellulose fiber mixtures and uses thereof for the production of fiber cement compositions and products |
| WO2016156295A1 (en) * | 2015-04-03 | 2016-10-06 | Redco Nv | Cellulose fiber mixtures and uses thereof for the production of fiber cement compositions and products |
| WO2018011423A1 (en) * | 2016-07-15 | 2018-01-18 | Swisspearl Group Ag | Compositions for the manufacture of flooring elements for indoor use |
| AU2017295061B2 (en) * | 2016-07-15 | 2020-05-21 | Swisspearl Group Ag | Compositions for the manufacture of flooring elements for indoor use |
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