加速干燥条件下混凝土徐变试验研究

徐变效应是混凝土材料的长期固有特性,通过短期试验难以分析混凝土构件强度、含水率等因素对徐变效应的影响规律。在混凝土试件加速干燥试验的基础上,进行了一系列加速干燥和未加速干燥混凝土试件的长期同步加载试验,探讨了加速干燥条件下混凝土徐变效应的变化规律。初步研究表明,加速干燥试验能减缓混凝土试件徐变效应的开展程度及发展速率,从而缩短混凝土长期徐变效应试验的观测周期。

An Experimental Research on Creep Effect of Concrete after Accelerated Drying

Creep effect is one of the long-term and inherent qualities of concrete .Generally , it is difficult to study the influ-ences of concrete strength and moisture content only by short-term experimental research .A series of long-term loading experiments of concrete members after accelerated drying are designed and developed to compare with undried members , based on the accelerated drying experiment .The creep effect of concrete after accelerated drying is explored and the initial results show that accelerated dr -ying experiment can slow down the development degree and rate of creep effect of concrete , shortening the test period of creep exper-iment.