JPH0617255B2 - Manufacturing method of fiber reinforced cement mortar - Google Patents
Manufacturing method of fiber reinforced cement mortarInfo
- Publication number
- JPH0617255B2 JPH0617255B2 JP62194320A JP19432087A JPH0617255B2 JP H0617255 B2 JPH0617255 B2 JP H0617255B2 JP 62194320 A JP62194320 A JP 62194320A JP 19432087 A JP19432087 A JP 19432087A JP H0617255 B2 JPH0617255 B2 JP H0617255B2
- Authority
- JP
- Japan
- Prior art keywords
- silica fume
- fibers
- fiber
- short fibers
- slurry
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は建築、土木構造物の施工に使用される繊維補強
セメントモルタルの製造方法に係るものである。TECHNICAL FIELD The present invention relates to a method for producing a fiber-reinforced cement mortar used for construction of construction and civil engineering structures.
（従来の技術） 従来よりセメントマトリックス中に短繊維、例えば合成
繊維、鉱物繊維、ガラス繊維、金属繊維、炭素繊維等を
混入して、セメントモルタル、コンクリート製品の引張
強度、曲げ強度等の諸性質を改善する試みがなされてい
る。(Conventional technology) Conventionally, various properties such as tensile strength and bending strength of cement mortar and concrete products are obtained by mixing short fibers such as synthetic fibers, mineral fibers, glass fibers, metal fibers and carbon fibers into a cement matrix. Attempts have been made to improve.
しかしながら細径でアスペクト比（長さ／直径）が大き
い繊維は、繊維同志が互い絡み合っていわゆる毛玉状に
なり易いため、良好なセメントモルタル、コンクリート
が得られず、補強材としての機能を十分に発揮させるこ
とが困難であった。However, fibers with a small diameter and a large aspect ratio (length / diameter) tend to become so-called pills when the fibers are entangled with each other, so good cement mortar and concrete cannot be obtained, and the function as a reinforcing material is fully exerted. It was difficult to do.
また短繊維及びシリカフュームは嵩が大きく、計量が非
常に難かしく、運搬効率も悪かった。In addition, short fibers and silica fume are bulky, very difficult to measure, and poor in transportation efficiency.
このため、従来、短繊維を集束したり、シリカフューム
を造粒する方法が提案されている。Therefore, conventionally, methods for bundling short fibers and granulating silica fume have been proposed.
（発明が解決しようとする問題点） しかしながら前記従来の方法は、パワーの大きいミキサ
ーを使用する場合は分散性がよいが、パワーのないミキ
サーを使用すると集束した繊維が解繊されず、補強どこ
ろか欠陥の原因となる。(Problems to be Solved by the Invention) However, although the above-mentioned conventional method has good dispersibility when a mixer with high power is used, when the mixer without power is used, the bundled fibers are not defibrated, and rather, are reinforced. Cause defects.
このため繊維分散性をよくする手段として特殊ミキサー
を使用すると、生産性が悪く、大量生産が困難となる。
また気泡を混入する方法は、製品の圧縮、曲げ、引張強
度が低くなり、更にまた増粘剤を添加すると成型性が悪
く、硬化を促進させるのにオートクレーブ養生等の特殊
な養生施設が必要となる。Therefore, if a special mixer is used as a means for improving the fiber dispersibility, the productivity is poor and mass production becomes difficult.
In addition, the method of mixing bubbles reduces the compression, bending, and tensile strength of the product, and the addition of a thickening agent causes poor moldability, requiring special curing facilities such as autoclave curing to accelerate curing. Become.
（問題点を解決するための手段） 本発明はこのような問題点を解決するために提案された
もので、所要量の短繊維に同繊維に対する体積比で100
％以上のシリカフュームと全所要量の約半分の水と、表
面活性分散剤を混練して（短繊維＋シリカフューム）ス
ラリーを製造する工程と、所要量の骨材、セメント及び
前記工程で得られた（短繊維＋シリカフユーム）スラリ
ーと、全所要量の残り半分の水と表面活性分散剤を混練
し、短繊維を三次元ランダムに配向させる工程よりなる
ことを特徴とする繊維補強セメントモルタルの製造方法
に係るものである。(Means for Solving Problems) The present invention has been proposed to solve such problems, in which a required amount of short fibers is 100% by volume ratio to the short fibers.
% Silica or more and about half of the total amount of water required, and a process of kneading a surface active dispersant to produce a slurry (short fibers + silica fume), and a required amount of aggregate, cement and the above-mentioned process. A process for producing a fiber-reinforced cement mortar, which comprises a step of kneading (short fiber + silica fume) slurry, the remaining half of the total required amount of water and a surface active dispersant to orient the short fibers in a three-dimensional random manner. It is related to.
（作用） 本発明においては前記したように、所要量の短繊維に同
繊維に対する体積比で100％以上のシリカフュームと全
所要量の半分の水と、表面活性分散剤を加えて混練する
ことによって、短繊維が良好に三次元ランダムに分散さ
れた嵩の小さい長期間保管可能な（短繊維＋シリカフュ
ーム）スラリーが得られるものである。(Operation) In the present invention, as described above, by kneading the required amount of short fibers by adding 100% or more by volume of silica fume to the fibers, half the total amount of water, and a surface active dispersant. A short-storable (short fiber + silica fume) slurry in which short fibers are well dispersed three-dimensionally and randomly and which can be stored for a long time is obtained.
更に本発明は前記工程で得られた（短繊維＋シリカフュ
ーム）スラリーを用意しておいて同スラリーと全所要量
の残り半分の水と、所要量の骨材及びセメントと、表面
活性分散剤を混練することによって、繊維分散性の悪い
短繊維が三次元ランダムに配向され、高強度で緻密な繊
維補強セメントモルタルが得られる。Furthermore, the present invention prepares the (short fiber + silica fume) slurry obtained in the above-mentioned step and prepares the slurry, the remaining half of the total amount of water, the required amount of aggregate and cement, and the surface active dispersant. By kneading, short fibers having poor fiber dispersibility are three-dimensionally randomly oriented, and high-strength and dense fiber-reinforced cement mortar can be obtained.
（実施例） 以下本発明を実施例について説明する。(Example) Hereinafter, the present invention will be described with reference to Examples.
a)使用材料 セメント(C) 普通ポルトランドセメント 混和材(Si) シリカフューム （ユニオン化成株式会社製 商品名、ポゾミックスＰ） 骨材(S) 砂 短繊維(CF) ピッチ系炭素繊維 （呉羽化学株式会社製 商品名 C-103T） 表面活性分散剤(P) 減水材 （ナフタリン・スルホン酸ホルマリン 高縮合物塩花王株式会社製 商品名 マイティー１５０） b)調合 炭素繊維混入率 （容量％）３％ 水／（セメント＋シリカフューム）比 Ｗ／（Ｃ＋Ｓｉ） （重量％）30％ シリカフューム／セメント比 Ｓｉ／Ｃ （重量％）30％ 骨材／（セメント＋シリカフューム）比 Ｓ／（Ｃ＋Ｓｉ） （〃 〃）50％ 表面活性分散剤／（セメント＋シリカフューム）比 Ｐ／（Ｃ＋Ｓｉ） （〃 〃）５％ A)（炭素繊維＋シリカフューム）スラリーの製造 50容量のパン型ミキサーを使用して、夫々所要量の炭
素繊維、及びシリカフュームと、所要量の約半分の水と
適量の減水剤を約２〜３分混練して（炭素繊維＋シリカ
フューム）スラリーを得た。a) Materials used Cement (C) Ordinary Portland cement Admixture (Si) Silica fume (Product name of Union Chemical Co., Ltd., Pozomix P) Aggregate (S) Sand short fiber (CF) Pitch-based carbon fiber (Kureha Chemical Co., Ltd.) Product name C-103T) Surface active dispersant (P) Water-reducing material (Naphthalene / formalin sulfonate high-condensate salt Kao Co., Ltd. product name Mighty 150) b) Blended carbon fiber content (volume%) 3% Water / (Cement + Silica fume) ratio W / (C + Si) (wt%) 30% Silica fume / cement ratio Si / C (wt%) 30% Aggregate / (Cement + silica fume) ratio S / (C + Si) (〃〃) 50% Surface active dispersant / (cement + silica fume) ratio P / (C + Si) (〃〃) 5% A) (carbon fiber + silica fume) slurry production Using a 50-volume pan-type mixer, It s requirements for carbon fibers, and obtain and silica fume, the required amount of about half of the water and an appropriate amount of water reducing agent for about 2-3 minutes kneading (carbon fiber + silica fume) slurry.
B)炭素繊維補強モルタルの製造 夫々所要量の骨材及びセメント並に前項Ａ）に示す工程
で得られた（炭素繊維＋シリカフューム）スラリーと所
要量の残り半分の水と適量の減水剤とを前記パン型ミキ
サーで３分間混練し、減水剤を後添加したのち、更に１
分間混練して炭素繊維補強モルタルを得た。B) Manufacture of carbon fiber reinforced mortar Each of the required amount of aggregate and cement, as well as the (carbon fiber + silica fume) slurry obtained in the step shown in the previous section A), the remaining half of the required amount of water and an appropriate amount of water reducing agent are used. After kneading for 3 minutes with the pan-type mixer and after adding the water reducing agent, further 1
Kneading was carried out for a minute to obtain a carbon fiber reinforced mortar.
なお短繊維としてはその他合成繊維、鉱物繊維、ガラス
繊維、金属繊維、炭素性繊維等が使用される。As the short fibers, other synthetic fibers, mineral fibers, glass fibers, metal fibers, carbon fibers and the like are used.
（発明の効果） 本発明によれば前記したように、所要量の短繊維に同繊
維に対する体積比で100％以上のシリカフュームと全所
要量の半分の水と表面活性分散剤を加えて混練すること
により、短繊維が良好に三次元ランダムに分散され、嵩
が大きくて運搬効率の悪い短繊維及びシリカフュームを
予めスラリー状にしておくことによって、運搬、計量等
の作業性が向上する。また繊維分散性の悪い短繊維をシ
リカフュームと混和することによって三次元に均等に分
散せしめるものである。(Effects of the Invention) According to the present invention, as described above, the required amount of short fibers is kneaded by adding 100% or more by volume of silica fume, half of the required amount of water and a surface active dispersant. As a result, the short fibers are favorably dispersed in a three-dimensional random manner, and the short fibers and silica fume, which are bulky and have poor transport efficiency, are made into a slurry in advance, whereby workability in transportation, weighing, etc. is improved. Further, short fibers having poor fiber dispersibility are mixed with silica fume so that they can be three-dimensionally and uniformly dispersed.
また本発明によれば、前記したように予め（短繊維＋シ
リカフューム）スラリーを用意しておき、同スラリーと
全所要量の残り半分の水と、所要量の骨材、セメント
と、表面活性分散剤を混練することによって、短繊維が
三次元ランダムに配向された高強度で緻密な繊維補強セ
メントモルタルが得られるものである。また前記したよ
うに、全所要量の水の量を２分し、その半分の水を使用
して予め（短繊維＋シリカフューム）スラリーを製造し
てこれを用意しておき、全所要量の水の量の残り半分を
使用して前述のように繊維補強セメントモルタルを製造
することによって汎用ミキサーでのモルタルの混練時間
を大幅に短縮することができる。Further, according to the present invention, as described above, the (short fiber + silica fume) slurry is prepared in advance, and the slurry and the remaining half of the total required amount of water, the required amount of aggregate, cement, and surface active dispersion. By kneading the agent, a high strength and dense fiber reinforced cement mortar in which short fibers are three-dimensionally randomly oriented is obtained. In addition, as described above, the total amount of water is divided into two parts, and half of the water is used to prepare (short fiber + silica fume) slurry in advance to prepare the slurry. By using the other half of the above amount to produce the fiber-reinforced cement mortar as described above, the mortar kneading time in a general-purpose mixer can be significantly shortened.
更にまた本発明によれば汎用ミキサーで繊維補強セメン
トモルタルを混練できるので、既存の設備による大量生
産が可能となる。Furthermore, according to the present invention, since the fiber-reinforced cement mortar can be kneaded with a general-purpose mixer, it is possible to mass-produce with existing equipment.
フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０４Ｂ 28/02 (56)参考文献 特開 昭60−96555（ＪＰ，Ａ) 特開 昭61−174472（ＪＰ，Ａ) 特開 昭61−68363（ＪＰ，Ａ) 特開 昭60−221350（ＪＰ，Ａ)Continuation of front page (51) Int.Cl. 5 Identification number Internal reference number for FI C04B 28/02 (56) References JP-A-60-96555 (JP, A) JP-A-61-174472 (JP , A) JP 61-68363 (JP, A) JP 60-221350 (JP, A)
Claims (1)
100％以上のシリカフュームと全所要量の約半分の水
と、表面活性分散剤を混練して（短繊維＋シリカフュー
ム）スラリーを製造する工程と、所要量の骨材、セメン
ト及び前記工程で得られた（短繊維＋シリカフューム）
スラリーと、全所要量の残り半分の水と表面活性分散剤
を混練し、短繊維を三次元ランダムに配向させる工程よ
りなることを特徴とする繊維補強セメントモルタルの製
造方法。1. A required amount of short fibers to a volume ratio of the short fibers
The process of kneading 100% or more of silica fume and about half the total amount of water and a surface active dispersant to produce a slurry (short fibers + silica fume), and the required amount of aggregate, cement and the above process (Short fiber + silica fume)
A method for producing a fiber-reinforced cement mortar, which comprises the step of kneading a slurry, the remaining half of the total required amount of water and a surface active dispersant, and orienting short fibers in a three-dimensional random manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62194320A JPH0617255B2 (en) | 1987-08-05 | 1987-08-05 | Manufacturing method of fiber reinforced cement mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62194320A JPH0617255B2 (en) | 1987-08-05 | 1987-08-05 | Manufacturing method of fiber reinforced cement mortar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6442345A JPS6442345A (en) | 1989-02-14 |
| JPH0617255B2 true JPH0617255B2 (en) | 1994-03-09 |
Family
ID=16322637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62194320A Expired - Lifetime JPH0617255B2 (en) | 1987-08-05 | 1987-08-05 | Manufacturing method of fiber reinforced cement mortar |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0617255B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7465350B2 (en) | 2001-05-29 | 2008-12-16 | Taiheiyo Cement Corporation | Hydraulic composition |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2894498B2 (en) * | 1989-06-10 | 1999-05-24 | 鹿島建設株式会社 | Slump value improvement method for fresh concrete |
| JP2674903B2 (en) * | 1991-06-28 | 1997-11-12 | 三井鉱山 株式会社 | Method for producing carbon fiber reinforced cementitious material |
| JP4526627B2 (en) * | 1999-12-28 | 2010-08-18 | 太平洋セメント株式会社 | Steel pipe filling concrete |
| KR100341020B1 (en) * | 2001-03-23 | 2002-06-21 | 박승범 | Manufacturing Methods of Water Purification Concrete Utilizing Industrial By-Products |
| CN108658536B (en) * | 2018-05-23 | 2020-12-29 | 武汉理工大学 | Fiber-reinforced cement-based material and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6096555A (en) * | 1983-10-31 | 1985-05-30 | 松下電工株式会社 | Fiber reinforced cement cured body and manufacture |
| JPS60221350A (en) * | 1984-04-13 | 1985-11-06 | 株式会社入江壁材 | Variety of powdery raw materials containing carbon short fiber |
| JPS6168363A (en) * | 1984-09-07 | 1986-04-08 | 株式会社小野田 | Manufacture of polyamide fiber reinforced cement |
| NO860083L (en) * | 1985-01-29 | 1986-07-30 | Elkem As | Reinforcing fibers treated with silica dust. |
-
1987
- 1987-08-05 JP JP62194320A patent/JPH0617255B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7465350B2 (en) | 2001-05-29 | 2008-12-16 | Taiheiyo Cement Corporation | Hydraulic composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6442345A (en) | 1989-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2036886C1 (en) | Method for preparation of mixture for production of composite material products from composite materials | |
| JP3215425B2 (en) | Inter-ground fiber cement | |
| JP2004507431A (en) | Fiber-containing concrete with high strength and ductility | |
| CN108101446A (en) | Basalt fiber composite rib concrete and preparation method thereof | |
| US5814146A (en) | MDF cement compositions with improved impact strength | |
| Zheng et al. | Carbon fiber reinforced cement composites improved by using chemical agents | |
| JP2012056780A (en) | Short fiber for reinforcing cementitious formed product, and cementitious formed product added with the same | |
| RU2433038C1 (en) | Method to make modified fibrous concrete mixture and modified fibrous mixture | |
| CN111233411A (en) | High-toughness and ultra-high-performance concrete doped with metakaolin and magnesium oxide and preparation method thereof | |
| JPH0617255B2 (en) | Manufacturing method of fiber reinforced cement mortar | |
| AL-Ridha | The influence of size of lightweight aggregate on the mechanical properties of self-compacting concrete with and without steel fiber | |
| JPH01244808A (en) | Manufacture of cement molded matter having high strength and precise structure | |
| CN104291760B (en) | High-expansion cement based composites and preparation method thereof | |
| JP4451083B2 (en) | Mortar manufacturing method | |
| SK5342001A3 (en) | Thin-walled component made from hydraulically hardened cement paste material and method for the production thereof | |
| Muktadir et al. | Comparison of compressive strength and flexural capacity between engineered cementitious composites (Bendable Concrete) and conventional concrete used in Bangladesh | |
| JPH07279312A (en) | Concrete filler member | |
| EP0632792B1 (en) | Interground fiber cement | |
| JPH0535649B2 (en) | ||
| JPH0781992A (en) | Concrete products using glass-reinforced thermosetting resin as reinforcing material and production thereof | |
| Ali et al. | Effect of Polyester Fiber on Workability Property of High Strength Concrete | |
| JPH0535099B2 (en) | ||
| RU2420472C1 (en) | Fibre-concrete mixture | |
| Muthusamy et al. | Experimental investigation on mechanical properties of high performance concrete | |
| JP2533562B2 (en) | Method for preventing cracking of high strength cement hardened product |