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混凝土与制品
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低弹性模量混凝土的徐变性能研究

作者:郭飞1,2,秦鸿根3,4

关键字:低弹模混凝土,徐变,干燥收缩,养护

 
(1.江苏苏博特新材料股份有限公司,江苏 南京  211103;2.高性能土木工程材料国家重点实验室,江苏 南京  210008;
3.东南大学 材料科学与工程学院,江苏 南京  211189;4.江苏省土木工程材料重点实验室,江苏 南京  211189)
 
    摘要: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。
    关键词:低弹模混凝土;徐变;干燥收缩;养护
    中图分类号:TU528        文献标识码:A        文章编号:1001-702X(2017)07-0119-03
 
Study on creep properties of low elastic modulus of concrete
GUO Fei1,2,QIN Honggen3,4
(1.Jiangsu Sobute New Materials Co. Ltd.,Nanjing 211103,China;
2.State Key Laboratory of High Performance Civil Engineering Materials,Nanjing 210008,China;
3.School of Material Science and Engineering,Southeast University,Nanjing 211189,China;
4.Jiangsu Key Laboratory of Civil Engineering Materials,Nanjing 211189,China)
    Abstract:Based on the construction practice,research the drying shrinkage and creep performance of low elastic modulus of concrete,study the creep development law of concrete of different wet curing time and different strength grade. The results show rapid development of the shrinkage and creep in 30 days,then tended to be stable after 150 days;the longer wet curing time and higher strength grade of concrete,the more favorable on the creep.
    Key words:low elastic modulus of concrete,creep,drying shrinkage,curing