博士生导师
硕士生导师
个人信息Personal Information
教师英文名称：Tengfei Xu
学历：博士研究生毕业
学位：工学博士学位
毕业院校：西南交通大学
学科：桥梁与隧道工程
所在单位：土木工程学院
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Experimental Study on Creep Failure of Non-Steam-Cured Ultrahigh-Performance Concrete under High Uniaxial Compressive Stress
发表刊物：Journal of Materials in Civil Engineering
摘要：Ultrahigh-performance concrete (UHPC) creep failure was experimentally investigated under high uniaxial compressive stress. The influence of applied stress levels, loading times, and loading rates was considered. The failure mode, ultimate strain, creep coefficient, Poisson’s ratio, and nonlinear creep of UHPC were analyzed. The creep specimens failed suddenly in the tertiary creep stage. The ultimate strain of each creep failure specimen was less than the corresponding peak strain εc. The circumferential creep coefficient was considerably larger than the axial creep coefficient. In the loading phase, no significant increase in Poisson’s ratio was observed for specimens loaded at normal or rapid rates. In the creep phase, Poisson’s ratios increased considerably. The microcracks propagation within the specimens affected the nonlinear creep and creep failure behavior in UHPC specimens under high sustained compressive stress. An amplification factor model for the nonlinear creep strain was proposed, and was validated by comparing measured and calculated results.
合写作者：Kailai Deng,Teng Tong,Hao Zhou
第一作者：Ziyang Zhang
通讯作者：Tengfei Xu*(通讯）
卷号：34
期号：6
页面范围：04022105
是否译文：否
发表时间：2022-03-22
收录刊物：SCI