Experimental Study on Cracking Property of Self-Compacting Concrete

被引:0
|
作者
Jin, Nanguo [1 ]
Jin, Xianyu [1 ]
Gu, Xianglin [2 ]
机构
[1] Zhejiang Univ, Dept Civil Engn, Hangzhou 310027, Zhejiang, Peoples R China
[2] Tongji Univ, Dept Bldg Engn, Shanghai 200092, Peoples R China
来源
基金
中国国家自然科学基金;
关键词
self-compacting concrete; crack; characteristic age; ultimate flexural tensile strain;
D O I
10.4028/www.scientific.net/KEM.400-402.433
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Taking free shrinkage as the key parameter in evaluating cracking of concrete, the cracking properties of self-compacting concrete with strength grade of C35 and C50 were investigated based on ring and slab restraint tests. Meanwhile, the ultimate tensile strain of self-compacting concrete was studied by using flexural test. Experimental results show that the shrinkage of self-compacting concrete is lower than that of normal concrete. Self-compacting concrete cracks later than normal concrete with the same strength grade. Although the ultimate flexural tensile strains of self-compacting concrete in 7 d and 28 d are a little bit lower than that of the normal concrete, it can still be concluded from the research that the cracking property of self-compacting concrete can be greatly improved by using proper mix proportion.
引用
收藏
页码:433 / +
页数:2
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