Strength of air-entrained concrete under compression withconstant confined stress
1.Collaborative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao
Technological University, Qingdao, Shandong 266033, China; 2.State Key Laboratory of Water Resources and Hydropower
Engineering Science, Wuhan University, Wuhan, Hubei 430072, China
Abstract：To accurately understand the properties of concrete materials under complex stress state， the compression tests of C30 air-entrained concrete under compression with constant confined stress were conducted. The failure characteristic of specimens and the cracking direction were observed. The results show that the strength under compression with constant confined stress was higher than the uniaxial compressive strength. The increasing value of strength reaches maximum when the lateral compressive stress ratio is 0.50, and the increasing value of strength decreases with the increasing of lateral compressive stress. The experimental results in the paper were compared with those in literature. The strength criterion with consideration of the influence of stress ratio was proposed to provide experimental and theory foundations for strength analysis of air-entrained concrete structures subjected to complex loading in cold environment.
2014, Vol. 35 
