低弹性模量混凝土的徐变性能研究

Study on creep properties of low elastic modulus of concrete

结合工程建设研究低弹性模量混凝土的干燥收缩和徐变性能,以及不同湿养护龄期、不同强度等级混凝土的徐变发展规律。结果表明:低弹性模量混凝土30 d内收缩和徐变发展较快,150 d以后趋于稳定;混凝土湿养护时间越长、强度等级越高,对徐变越有利。

Based on the construction practice,research the drying shrinkage and creep performance of low elastic modulus ofconcrete,study the creep development law of concrete of different wet curing time and different strength grade. The results showrapid development of the shrinkage and creep in 30 days, then tended to be stable after 150 days;the longer wet curing time andhigher strength grade of concrete,the more favorable on the creep.