A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To provide a fiber-reinforced concrete containing short fiber showing satisfactory fluidity even after water injection and excellent in pumpability, and, in which material separation is hard to occur and the mixing of lumping-up caused by fiber aggregates is not shown upon installation, and capable of obtain a homogeneous construction object.SOLUTION: Provided is a fiber-reinforced concrete containing cement, a fine aggregate, a coarse aggregate and polypropylene short fiber having a fineness of 2,000±200 decitex and a rigidity of 2.0 GPa or higher, and also provided is the fiber-reinforced concrete in which the length of the short fiber is 20 to 40 mm.SELECTED DRAWING: None
【課題】 短繊維を含有する繊維強化コンクリートであって、注水後も良好な流動性を呈し、圧送性に優れ、また材料分離を起こし難く、打設の際に繊維凝集物によるダマの混在も見られず、均質な施工物が得られる繊維強化コンクリートを提供する。【解決手段】 セメント、細骨材、粗骨材及び表面に凹凸を有する繊度２０００±２００デシテックス且つ剛性率２．０ＧＰａ以上のポリプロピレン短繊維を含有する繊維強化コンクリート。また、短繊維の長さが２０〜４０ｍｍである前記繊維強化コンクリート。【選択図】 なし
PROBLEM TO BE SOLVED: To provide a fiber-reinforced concrete containing short fiber showing satisfactory fluidity even after water injection and excellent in pumpability, and, in which material separation is hard to occur and the mixing of lumping-up caused by fiber aggregates is not shown upon installation, and capable of obtain a homogeneous construction object.SOLUTION: Provided is a fiber-reinforced concrete containing cement, a fine aggregate, a coarse aggregate and polypropylene short fiber having a fineness of 2,000±200 decitex and a rigidity of 2.0 GPa or higher, and also provided is the fiber-reinforced concrete in which the length of the short fiber is 20 to 40 mm.SELECTED DRAWING: None
【課題】 短繊維を含有する繊維強化コンクリートであって、注水後も良好な流動性を呈し、圧送性に優れ、また材料分離を起こし難く、打設の際に繊維凝集物によるダマの混在も見られず、均質な施工物が得られる繊維強化コンクリートを提供する。【解決手段】 セメント、細骨材、粗骨材及び表面に凹凸を有する繊度２０００±２００デシテックス且つ剛性率２．０ＧＰａ以上のポリプロピレン短繊維を含有する繊維強化コンクリート。また、短繊維の長さが２０〜４０ｍｍである前記繊維強化コンクリート。【選択図】 なし
FIBER-REINFORCED CONCRETE
繊維強化コンクリート
HANEI YOSHIHISA (author)
2017-10-05
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
| TIBKAT | 1989