Study of the Effect of Fibre Orientation on Artificially Directed Steel Fibre-Reinforced Concrete

被引：26
作者：
Li, Fang-Yuan [1 ]
Li, Liu-Yang [1 ]
Dang, Yan [2 ]
Wu, Pei-Feng [1 ]
机构：
[1] Tongji Univ, Coll Civil Engn, Dept Bridge Engn, Shanghai, Peoples R China
[2] Tongji Univ Grp Co Ltd, Architectural Design & Res Inst, Shanghai, Peoples R China
来源：
ADVANCES IN MATERIALS SCIENCE AND ENGINEERING | 2018年 / 2018卷
关键词：
SELF-COMPACTING CONCRETE; RAY COMPUTED-TOMOGRAPHY; BEHAVIOR;
D O I：
10.1155/2018/8657083
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The fibre utilization efficiency of directionally distributed fibre-reinforced concrete is better than that of randomly distributed fibre. However, controlling the fibre direction is difficult, which limits its applications. In this paper, a method in which fibres were artificially directed was used to simulate the feasibility of orienting fibres during 3D concrete printing. Based on artificially directed steel fibre-reinforced concrete specimens, the orientation characteristics of directional fibre-reinforced concrete specimens were studied. The differences between the gravity and the boundary effects in ordinary fibre-reinforced concrete and artificially directed fibre-reinforced concrete were compared. The average orientation coefficient in randomly distributed fibre-reinforced concrete was 0.59, whereas this value in directionally distributed fibre-reinforced concrete was over 0.9. This result demonstrated the feasibility of manually orienting the fibres in steel fibre-reinforced concrete in layer-by-layer casting.
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页数：11
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