Carbon fiber reinforced cement improved by using silane-treated carbon fibers

被引:88
作者
Xu, YS [1 ]
Chung, DDL [1 ]
机构
[1] SUNY Buffalo, Composite Mat Res Lab, Buffalo, NY 14260 USA
基金
美国国家科学基金会;
关键词
fiber reinforcement; cement paste; tensile properties; silica fume; silane;
D O I
10.1016/S0008-8846(99)00015-0
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The tensile strength of cement paste was increased by 56% and the modulus and ductility were increased by 39% by using silane-treated carbon fibers and silane-treated silica fume, relative to the values for cement paste with as-received carbon fibers and as-received silica fume. Silane treatment of fibers and silica fume contributed about equally to the strengthening. Silane treatment of fibers and silica fume also decreased the air void content. The strengthening and air void content reduction were less when the fiber treatment involved potassium dichromate instead of silane and even less when the treatment involved ozone. Silane's effectiveness is due to its hydrophilic nature. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:773 / 776
页数:4
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