STUDY OF STRENGTH AND DEFORMATION OF AIR ENTRAINED CONCRETE UNDER BIAXIAL COMPRESSION AFTER FREEZING AND THAWING CYCLES
Properties of air-entrained concrete under compressive loads with constant confined stress after 0, 100, 200, 300 cycles of frccze-thaw were studied. Concrete cubes were tested under biaxial compressive stresses. Four constant confined stresses and four different cycles of freeze thaw were the main variables. Static compressive strengths were examined. Failure modes of specimens were also described. The experimental results show that the effect of freezing and thawing cycles on plain concrete do not change the failure modes. The formula of the biaxial compressive strength, biaxial tension-compression strength and biaxial tensile strength in principal stress space is proposed. It provides the experimental and theory foundations for strength analysis of air-entrained concrete structures subject to complex loads in cold environment.
FENG ZHANG SHU-CAI LI SHU-CHENG LI JING-PENG ZHU BO ZHANG DE-LONG LUO
School of Civil and Hydraulic Engineering, Shandong University Jinan, 250061, P.R.China Shandong Expressway Group Co., Qingdao High-speed Ltd.Qingdao, 26601, P.R.China
国际会议
The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会)
大连
英文
1489-1496
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）