Experimental Study on Cracking Property of Self-Compacting Concrete
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.
Jingsi Huo, Yan Xiao, Zongjin Li and Shuaib Ahmad
N. G. Jin et al., "Experimental Study on Cracking Property of Self-Compacting Concrete", Key Engineering Materials, Vols. 400-402, pp. 433-438, 2009