JPH10167792A - Fiber-reinforced cement composition and production of cement cured product - Google Patents

Fiber-reinforced cement composition and production of cement cured product

Info

Publication number
JPH10167792A
JPH10167792A JP35194596A JP35194596A JPH10167792A JP H10167792 A JPH10167792 A JP H10167792A JP 35194596 A JP35194596 A JP 35194596A JP 35194596 A JP35194596 A JP 35194596A JP H10167792 A JPH10167792 A JP H10167792A
Authority
JP
Japan
Prior art keywords
cement
fiber
weight
lightweight aggregate
cured
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
Application number
JP35194596A
Other languages
Japanese (ja)
Inventor
Katsuhiko Imai
克彦 今井
Original Assignee
Nippon Electric Glass Co Ltd
日本電気硝子株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Electric Glass Co Ltd, 日本電気硝子株式会社 filed Critical Nippon Electric Glass Co Ltd
Priority to JP35194596A priority Critical patent/JPH10167792A/en
Publication of JPH10167792A publication Critical patent/JPH10167792A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

PROBLEM TO BE SOLVED: To suppress separation phenomenon of lightweight aggregate in cement and uniformly disperse the lightweight aggregate by including cement, lightweight aggregate, a water reducing agent, a pulp fiber, a reinforcing fiber and water. SOLUTION: This fiber-reinforced cement composition is obtained by kneading cement with 50-120wt.% lightweight aggregate having <=1.0 specific gravity, e.g. perlite, shirasu balloon or glass balloon, 1-5wt.% water reducing agent, 0.01-2wt.% pulp fiber, 3-20wt.% reinforcing fiber, e.g. alkaline glass fiber or polyvinyl alcohol-based fiber, having 5-50mm fiber length and 5-25μm fiber diameter and <=60wt.% water. The cement composition is poured into formwork and formed and cured to provide the objective cement cured body having <=1.3 specific gravity and <=0.4W/m.k heat conductivity. Thereby, lightweight and high-strength cement cured product having small specific gravity and heat conductivity is obtained.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【産業上の利用分野】本発明は、型枠に流し込んで成形
するための繊維強化セメント組成物及びセメント硬化体
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 fiber-reinforced cement composition for casting into a mold and molding, and a method for producing a hardened cement body.
【0002】[0002]
【従来の技術】従来よりセメント組成物は、剛性、不燃
性等の利点によって土木建築分野に広範囲に利用されて
いる。
2. Description of the Related Art Conventionally, cement compositions have been widely used in the field of civil engineering and construction because of their advantages such as rigidity and incombustibility.
【0003】またセメントに対し、強化繊維として、ビ
ニロン繊維、アクリル繊維、カーボン繊維、アラミド繊
維等の有機繊維やガラス繊維を含有させた複合材料も広
く用いられており、脆性を補い、引張強度、曲げ強度、
耐衝撃強度を向上させる有効な手段として一般に認識さ
れている。
[0003] Further, composite materials containing organic fibers such as vinylon fibers, acrylic fibers, carbon fibers, and aramid fibers and glass fibers as reinforcing fibers are widely used for cement, and they compensate for brittleness and improve tensile strength and strength. Bending strength,
It is generally recognized as an effective means for improving impact resistance.
【0004】[0004]
【発明が解決しようとする課題】近年、建築物の高層化
や多様化に伴い繊維強化セメントの軽量化が要求されつ
つあり、セメントに比べてかさ比重の小さいシラスバル
ーン、パーライト、ガラスバルーン等の軽量骨材を混合
することによって、軽量化が図られている。また軽量骨
材の配合量を増やすほど、熱伝導率が低下するため、防
火性能も向上するというメリットもある。
In recent years, with the rise and diversification of buildings, the weight of fiber reinforced cement has been required to be reduced, and such materials as shirasu balloons, pearlite, glass balloons, etc., having a lower bulk specific gravity than cement have been required. Light weight is achieved by mixing lightweight aggregates. In addition, as the amount of the lightweight aggregate increases, the thermal conductivity decreases, and thus there is a merit that the fire prevention performance is also improved.
【0005】しかしながら多量の軽量骨材を混合した繊
維強化セメントを型枠に流し込んで成形する場合、軽量
骨材がセメントの上層部に多く、下層部に少なくなると
いう分離現象が発生し、強度や成形作業性が低下しやす
いため、一般に軽量骨材の配合量は50重量%未満で使
用されている。
[0005] However, when a fiber-reinforced cement mixed with a large amount of lightweight aggregate is cast into a mold and molded, a separation phenomenon occurs in which the amount of lightweight aggregate is large in the upper part of the cement and small in the lower part, and the strength and strength are reduced. In general, the amount of the lightweight aggregate is less than 50% by weight because the molding workability tends to deteriorate.
【0006】本発明は、軽量骨材を多量に含有させるこ
とによって軽量化を図ることができ、しかも軽量骨材の
セメント中での分離現象を抑え、均一に分散させること
が可能な繊維強化セメント組成物と、このセメント組成
物を型枠に流し込んで成形することによってセメント硬
化体を製造する方法を提供することを目的とするもので
ある。
The present invention provides a fiber-reinforced cement which can be reduced in weight by including a large amount of lightweight aggregate, and which can suppress the phenomenon of separation of the lightweight aggregate in cement and can be uniformly dispersed. An object of the present invention is to provide a composition and a method for producing a hardened cement body by pouring and molding the cement composition into a mold.
【0007】[0007]
【課題を解決するための手段】本発明者は、多量の軽量
骨材を含有する繊維強化セメント組成物に、パルプ繊維
を混合させて流し込み成形すると、軽量骨材の分離現象
が抑制されることを見いだし、本発明を提案するに至っ
た。
Means for Solving the Problems The present inventor has found that when a pulp fiber is mixed with a fiber-reinforced cement composition containing a large amount of lightweight aggregate and cast and formed, the separation phenomenon of the lightweight aggregate is suppressed. And came to propose the present invention.
【0008】すなわち本発明の繊維強化セメント組成物
は、セメントに対し、50〜120重量%の軽量骨材、
1〜5重量%の減水剤、0.01〜2重量%のパルプ繊
維、3〜20重量%の強化繊維及び60重量%以下の水
を含有してなることを特徴とする。
That is, the fiber-reinforced cement composition of the present invention comprises a lightweight aggregate of 50 to 120% by weight based on cement,
It is characterized by comprising 1 to 5% by weight of a water reducing agent, 0.01 to 2% by weight of pulp fiber, 3 to 20% by weight of reinforcing fiber and 60% by weight or less of water.
【0009】また本発明のセメント硬化体の製造方法
は、セメントに対し、50〜120重量%の軽量骨材、
1〜5重量%の減水剤、0.01〜2重量%のパルプ繊
維、3〜20重量%の強化繊維及び60重量%未満の水
を含有してなる繊維強化セメント組成物を、型枠に流し
込んで成形した後、養生硬化させることを特徴とする。
Further, the method for producing a hardened cement according to the present invention is characterized in that a lightweight aggregate of 50 to 120% by weight with respect to the cement;
A fiber reinforced cement composition comprising 1 to 5% by weight of a water reducing agent, 0.01 to 2% by weight of pulp fiber, 3 to 20% by weight of reinforcing fiber and less than 60% by weight of water is added to a mold. It is characterized by curing after curing by casting.
【0010】さらに本発明のセメント硬化体の製造方法
は、硬化体の比重が1.3以下であり、熱伝導率が0.
40W/m・K以下であることを特徴とする。
Further, in the method for producing a hardened cement according to the present invention, the hardened body has a specific gravity of 1.3 or less and a heat conductivity of 0.1 or less.
It is characterized by being 40 W / m · K or less.
【0011】[0011]
【作用】本発明のセメントとしては、公知のセメントが
使用でき、例えば普通ポルトランドセメント、早強ポル
トランドセメント、中庸熱ポルトランドセメント、耐硫
酸ポルトランドセメント等の各種ポルトランドセメント
を単独あるいは2種以上混合して使用可能である。
As the cement of the present invention, known cements can be used. For example, various Portland cements such as ordinary Portland cement, early-strength Portland cement, moderately heated Portland cement, and sulfuric acid-resistant Portland cement can be used alone or in combination of two or more. Can be used.
【0012】但し、強化繊維としてガラス繊維を使用す
る場合には、ガラス繊維のアルカリによる劣化を抑える
ためには、珪酸カルシウム−アウイン−スラグ系低アル
カリ性セメント(秩父小野田株式会社製GRCセメン
ト)、アウイン−石膏−炭酸カルシウム系低アルカリ性
セメント等の低アルカリ性セメントを使用することが望
ましい。
However, when glass fibers are used as the reinforcing fibers, calcium silicate-auin-slag-based low alkalinity cement (GRC cement manufactured by Chichibu Onoda Co., Ltd.) It is desirable to use a low alkaline cement such as a gypsum-calcium carbonate low alkaline cement.
【0013】軽量骨材は、硬化体の比重を小さくし、熱
伝導率を下げるという作用を有するものであり、かさ比
重が1.0以下のシラスバルーン、パーライト、ガラス
バルーン及びスチレン、エチレン、ウレタン等の有機高
分子物質の発泡系粉状体等が使用できるが、特にガラス
バルーンは、吸水率が小さく、水/セメント比を小さく
することができ、硬化した後の曲げ強度を向上する効果
が大きいため好ましい。軽量骨材の配合量は、セメント
に対し、50〜120重量%、好ましくは、60〜10
0重量%とする。配合量が50重量%未満では、硬化し
た後の比重が大きくなるため、軽量化を図ることが困難
となり、120重量%を超えると、流し込み成形を行っ
た際に分離現象が発生しやすくなり、硬化体の強度が低
くなると共に、成形作業性が悪くなるため好ましくな
い。
Light-weight aggregates have the effect of reducing the specific gravity of the cured product and lowering the thermal conductivity. Shirasu balloons, pearlite, glass balloons having a bulk specific gravity of 1.0 or less and styrene, ethylene, urethane In particular, glass balloons have a small water absorption, can reduce the water / cement ratio, and have an effect of improving the flexural strength after hardening. It is preferable because it is large. The amount of the lightweight aggregate is 50 to 120% by weight, preferably 60 to 10% by weight based on the cement.
0% by weight. If the compounding amount is less than 50% by weight, the specific gravity after curing becomes large, so that it is difficult to reduce the weight. If it exceeds 120% by weight, a separation phenomenon is likely to occur when casting is performed, It is not preferable because the strength of the cured product is lowered and the molding workability is deteriorated.
【0014】減水剤は、水の量を減らしても成形作業性
を良好に維持させる作用を有するものであり、市販の減
水剤、AE減水剤、高性能減水剤、高性能AE減水剤等
が使用できる。減水剤の配合量は、セメントに対し、1
〜5重量%、好ましくは2〜4重量%とする。配合量が
1重量%未満では、減水効果が小さくなり、5重量%を
超えると、セメント硬化体の防火性能が低下しやすくな
ると共に、材料コストが上昇するため好ましくない。
The water reducing agent has an effect of maintaining good molding workability even when the amount of water is reduced, and commercially available water reducing agents, AE water reducing agents, high performance water reducing agents, high performance AE water reducing agents and the like can be used. Can be used. The amount of the water reducing agent is 1 to cement.
-5% by weight, preferably 2-4% by weight. If the amount is less than 1% by weight, the water reducing effect becomes small, and if it exceeds 5% by weight, the fire prevention performance of the hardened cement material is liable to be lowered and the material cost is undesirably increased.
【0015】パルプ繊維は、流し込み成形を行った際の
軽量骨材の分離現象を抑え、強度と成形作業性を向上さ
せる作用を有するものであり、その配合量は、セメント
に対し、0.01〜2重量%、好ましくは0.1〜1.
0重量%とする。配合量が0.01重量%未満では、軽
量骨材の分離を防止する効果が小さくなり、2重量%を
超えると、モルタルの流動性が小さくなり、成形作業性
が悪くなるため好ましくない。
The pulp fiber has a function of suppressing the separation phenomenon of the lightweight aggregate at the time of casting, and improving the strength and the workability of the molding. To 2% by weight, preferably 0.1 to 1.
0% by weight. If the amount is less than 0.01% by weight, the effect of preventing the separation of the lightweight aggregate becomes small, and if it exceeds 2% by weight, the fluidity of the mortar becomes small and the molding workability deteriorates, which is not preferable.
【0016】強化繊維は、セメント硬化体の強度を向上
させるための材料であり、ビニロン繊維、アクリル繊
維、アラミド繊維、カーボン繊維等の有機繊維やガラス
繊維が使用できるが、不燃性の点からガラス繊維を使用
することが望ましい。さらにセメント中での劣化の少な
い耐アルカリ性ガラス繊維を使用することがより望まし
い。ガラス繊維の形態としては、繊維長5〜50mm、
繊維径5〜25μmのチョップドストランドが適当であ
り、その配合量は、セメントに対し3〜20重量%、好
ましくは5〜15重量%とする。配合量が3重量%未満
では、補強効果が小さくなり、20重量%を超えると、
成形作業性が悪くなるため好ましくない。
The reinforcing fiber is a material for improving the strength of the hardened cement, and organic fibers such as vinylon fiber, acrylic fiber, aramid fiber and carbon fiber and glass fiber can be used. It is desirable to use fibers. Further, it is more desirable to use alkali-resistant glass fibers which are less likely to deteriorate in cement. As a form of glass fiber, fiber length 5 to 50 mm,
Chopped strands having a fiber diameter of 5 to 25 μm are suitable, and the compounding amount is 3 to 20% by weight, preferably 5 to 15% by weight based on the cement. If the amount is less than 3% by weight, the reinforcing effect is small, and if it exceeds 20% by weight,
It is not preferable because molding workability is deteriorated.
【0017】また水の配合量は、セメントに対し、60
重量%未満とする。すなわち配合量が60重量%を超え
ると、硬化体の強度が低下するため好ましくない。
The amount of water is 60 to cement.
% By weight. That is, if the amount exceeds 60% by weight, the strength of the cured product is undesirably reduced.
【0018】尚、本発明のセメント組成物を製造するに
あたり、必要に応じて、収縮低減剤、防水剤、遅延剤、
AE剤、増粘剤等の各種添加剤を添加しても良い。また
セメントの一部を、膨張材、フロロカルシウムアルミネ
ートを主成分とする寸法安定化材及び高炉スラグ微粉
末、シリカヒューム、フライアッシュ等のポゾラン物質
で置き換えても良い。
In producing the cement composition of the present invention, a shrinkage reducing agent, a waterproofing agent, a retarder,
Various additives such as an AE agent and a thickener may be added. Further, a part of the cement may be replaced with an expansive material, a dimension stabilizing material mainly composed of fluorocalcium aluminate, and a pozzolanic substance such as blast furnace slag fine powder, silica fume and fly ash.
【0019】[0019]
【実施例】以下、本発明を実施例に基づいて詳細に説明
する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments.
【0020】表1は、実施例(試料No.1〜7)と、
比較例(試料No.8〜10)の繊維強化セメント組成
物を示すものである。
Table 1 shows Examples (Sample Nos. 1 to 7) and
9 shows fiber-reinforced cement compositions of comparative examples (samples Nos. 8 to 10).
【0021】[0021]
【表1】 [Table 1]
【0022】表1の繊維強化セメント組成物は、次のよ
うにして作製した。
The fiber reinforced cement compositions shown in Table 1 were prepared as follows.
【0023】まずパルプ繊維、水、遅延剤を解繊ミキサ
ーに入れ、30秒間攪拌し、パルプ繊維を開繊させた。
次にこれをオムニミキサーに移し、セメントと軽量骨材
を入れ、1分間攪拌してから、減水剤を入れ、さらに1
分間攪拌した。その後、強化繊維を入れ、30秒間攪拌
した。
First, pulp fiber, water and a retarder were put into a defibration mixer and stirred for 30 seconds to open the pulp fiber.
Next, this was transferred to an omni mixer, and cement and lightweight aggregate were added. The mixture was stirred for 1 minute, and then a water reducing agent was added.
Stirred for minutes. Thereafter, the reinforcing fibers were added and stirred for 30 seconds.
【0024】こうして得られた繊維強化セメント組成物
を、760×330×20mmの寸法を有する木製型枠
に流し込み、こてを使用して表面を均した後、40℃、
8時間の条件で蒸気養生することによって硬化させ、さ
らに20℃、60%RHの条件室に入れ、28日間養生
させることによってセメント硬化体を作製した。
The fiber-reinforced cement composition thus obtained is poured into a wooden form having dimensions of 760 × 330 × 20 mm, and the surface is leveled using a trowel.
It was cured by steam curing under the conditions of 8 hours, and was further placed in a condition room at 20 ° C. and 60% RH, and cured for 28 days to produce a cured cement body.
【0025】上記セメントは秩父小野田株式会社製のG
RCセメント、軽量骨材は株式会社サンライト製のGラ
イト、パルプ繊維はパルテック株式会社製のセロファイ
バー、減水剤はポゾリス物産株式会社製のレオビルドS
P−8N、強化繊維は日本電気硝子株式会社製の耐アル
カリ性ガラス繊維ACS19H−530W、遅延剤はク
エン酸を使用した。
The above cement is G G from Chichibu Onoda Co., Ltd.
RC cement, lightweight aggregate is G-lite manufactured by Sunlight Co., Ltd., pulp fiber is cello fiber manufactured by Paltec Co., Ltd., water reducing agent is Rheobuild S manufactured by Pozoris Bussan Co., Ltd.
P-8N, the reinforcing fiber used were alkali-resistant glass fiber ACS19H-530W manufactured by Nippon Electric Glass Co., Ltd., and the citric acid was used as the retarder.
【0026】表1から明らかなように、実施例であるN
o.1〜7の各試料は、比重が1.20以下、熱伝導率
が0.39W/m・K以下といずれも小さく、成形作業
性も良好であり、高い曲げ強度を有していた。
As is clear from Table 1, the N
o. Each of Samples 1 to 7 had a specific gravity of 1.20 or less and a thermal conductivity of 0.39 W / m · K or less, all of which were good in molding workability, and had high bending strength.
【0027】それに対し、比較例であるNo.8の試料
は、軽量骨材の配合量が少ないため、比重と熱伝導率が
大きかった。またNo.9の試料は、軽量骨材の配合量
が大きいため、比重と熱伝導率は小さかったが、成形作
業性に劣っており、曲げ強度も低かった。さらにNo.
10の試料は、パルプ繊維を含有しないため、成形作業
性が悪く、曲げ強度も低かった。
On the other hand, in Comparative Example No. Sample No. 8 had a large specific gravity and a high thermal conductivity because the amount of the lightweight aggregate was small. No. The sample No. 9 had a low specific gravity and a low thermal conductivity due to a large amount of the lightweight aggregate, but was inferior in molding workability and low in bending strength. In addition, No.
Sample No. 10 did not contain pulp fibers, and thus had poor molding workability and low bending strength.
【0028】尚、表中の比重は、セメント硬化体の寸法
と重量から計算で求め、熱伝導率は、京都電子工業株式
会社製の熱伝導率測定装置を用いて測定した。
The specific gravity in the table was obtained by calculation from the dimensions and weight of the cured cement, and the thermal conductivity was measured using a thermal conductivity measuring device manufactured by Kyoto Electronics Industry Co., Ltd.
【0029】また成形作業性は、繊維強化セメント組成
物を型枠に流しこみ、その表面全体に亙ってこてを5往
復させて表面を均した後の表面状態を目視で観察するこ
とによって求めたものであり、表面がほぼ平滑になった
ものを○、多数の凹凸部が認められたものを×とした。
The molding workability is determined by pouring the fiber-reinforced cement composition into a mold, reciprocating the trowel five times over the entire surface, leveling the surface, and visually observing the surface condition. ○ indicates that the surface was substantially smooth, and X indicates that a large number of uneven portions were observed.
【0030】また曲げ強度は、各試料から275×50
×15mmの試験体を切り出し、(株)島津製作所製オ
ートグラフを使用して、スパン225mm、載荷速度2
mm/分の条件で3点曲げ試験を行うことによって測定
した。
The bending strength was 275 × 50 from each sample.
A specimen having a size of 15 mm was cut out, and a span of 225 mm and a loading speed of 2 were measured using an autograph manufactured by Shimadzu Corporation.
It was measured by performing a three-point bending test under the condition of mm / min.
【0031】[0031]
【発明の効果】以上のように本発明の繊維強化セメント
組成物は、軽量骨材を多量に含有するが、これを型枠に
流し込んで成形しても、軽量骨材の分離現象が抑制され
るため、軽量で、比重と熱伝導率が小さく、しかも高強
度のセメント硬化体を得ることができる。
As described above, the fiber-reinforced cement composition of the present invention contains a large amount of lightweight aggregate, but even if it is poured into a mold and molded, the separation phenomenon of the lightweight aggregate is suppressed. Therefore, it is possible to obtain a light-weight, low-specific-gravity, low-thermal-conductivity, and high-strength hardened cement body.
【0032】また本発明の繊維強化セメント組成物は、
他の建築材料との複合化を図ることもでき、例えばタイ
ルを敷き並べた型枠に打ち込んでから硬化させることに
より、タイル貼りサイディング基材を容易に製造するこ
とが可能である。
The fiber-reinforced cement composition of the present invention comprises
Composite with other building materials can also be achieved. For example, a tiled siding base material can be easily manufactured by driving into a mold in which tiles are laid and then curing.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI C04B 24:22) 111:40 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI C04B 24:22) 111: 40

Claims (3)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 セメントに対し、50〜120重量%の
    軽量骨材、1〜5重量%の減水剤、0.01〜2重量%
    のパルプ繊維、3〜20重量%の強化繊維及び60重量
    %以下の水を含有してなることを特徴とする繊維強化セ
    メント組成物。
    1. A lightweight aggregate of 50 to 120% by weight, a water reducing agent of 1 to 5% by weight, 0.01 to 2% by weight based on cement.
    A fiber-reinforced cement composition comprising pulp fiber of 3 to 20% by weight of reinforcing fiber and 60% by weight or less of water.
  2. 【請求項2】 セメントに対し、50〜120重量%の
    軽量骨材、1〜5重量%の減水剤、0.01〜2重量%
    のパルプ繊維、3〜20重量%の強化繊維及び60重量
    %以下の水を含有してなる繊維強化セメント組成物を、
    型枠に流しこんで成形した後、養生硬化させることを特
    徴とするセメント硬化体の製造方法。
    2. A lightweight aggregate of 50 to 120% by weight, a water reducing agent of 1 to 5% by weight, 0.01 to 2% by weight based on cement.
    A fiber reinforced cement composition containing 3 to 20% by weight of reinforced fiber and 60% by weight or less of water,
    A method for producing a hardened cement body, comprising: casting a molded body, curing the same, and then curing.
  3. 【請求項3】 硬化体の比重が1.3以下であり、熱伝
    導率が0.40W/m・K以下であることを特徴とする
    請求項2記載のセメント硬化体の製造方法。
    3. The method for producing a hardened cement according to claim 2, wherein the specific gravity of the hardened body is 1.3 or less and the thermal conductivity is 0.40 W / m · K or less.
JP35194596A 1996-12-10 1996-12-10 Fiber-reinforced cement composition and production of cement cured product Pending JPH10167792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP35194596A JPH10167792A (en) 1996-12-10 1996-12-10 Fiber-reinforced cement composition and production of cement cured product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP35194596A JPH10167792A (en) 1996-12-10 1996-12-10 Fiber-reinforced cement composition and production of cement cured product

Publications (1)

Publication Number Publication Date
JPH10167792A true JPH10167792A (en) 1998-06-23

Family

ID=18420707

Family Applications (1)

Application Number Title Priority Date Filing Date
JP35194596A Pending JPH10167792A (en) 1996-12-10 1996-12-10 Fiber-reinforced cement composition and production of cement cured product

Country Status (1)

Country Link
JP (1) JPH10167792A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002326856A (en) * 2001-05-02 2002-11-12 Fujita Corp Rupture resistant cement mortar and method for producing the same
KR100389136B1 (en) * 2000-12-22 2003-06-25 주식회사 에스에스산업 Additive for paving a road from the stone mastic asphalt and its granule preparation method
JP2003300769A (en) * 2002-04-02 2003-10-21 Meidensha Corp Fire resistant heat resistant material and method for producing the same
KR100954144B1 (en) 2008-09-17 2010-04-20 주식회사 씨포트 Hifg strength light weight concrete
JP2012025663A (en) * 2011-11-09 2012-02-09 Fujita Corp Permanent form for cement mortar

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100389136B1 (en) * 2000-12-22 2003-06-25 주식회사 에스에스산업 Additive for paving a road from the stone mastic asphalt and its granule preparation method
JP2002326856A (en) * 2001-05-02 2002-11-12 Fujita Corp Rupture resistant cement mortar and method for producing the same
JP2003300769A (en) * 2002-04-02 2003-10-21 Meidensha Corp Fire resistant heat resistant material and method for producing the same
KR100954144B1 (en) 2008-09-17 2010-04-20 주식회사 씨포트 Hifg strength light weight concrete
JP2012025663A (en) * 2011-11-09 2012-02-09 Fujita Corp Permanent form for cement mortar

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