结构工程师Issue(3)：160-167,8.
早龄期混凝土与钢筋粘结时变性能试验研究
Experimental Research on Time-dependent Bond Behavior Between Young Concrete and Reinforcing Steel Bars
摘要
Abstract
Through the pull-out tests of 70 reinforced concrete specimens,the bond performance of the steel reinforcement and young concrete,of which the concrete age varied from 1 day to 28 day,were studied.The in-fluence of concrete cover thickness and steel bar diameter on bond performance were analyzed.The results showed that the concrete age had significant influence on the bond performance between the reinforcing bars and the young concrete.The ultimate bond stress increased with the increased concrete age,while the corre-sponding slip was not obviously influenced by conctrete age.It was also found that the ultimate bond stress and the corresponding slip increased with the increased concrete cover thickness for a given reinforcing bar diame-ter,while the ultimate bond stress and the corresponding slip decreased with increased bar diameter for a given concrete cover thickness.A simplified formula of the ultimate bond stress and the corresponding slip was pro-posed based on the test results.关键词
早龄期混凝土/钢筋/粘结/时变性能/试验研究Key words
young concrete/bond/time-dependent/experimental research引用本文复制引用
陈超,宋晓滨..早龄期混凝土与钢筋粘结时变性能试验研究[J].结构工程师,2014,(3):160-167,8.基金项目
同济大学2010年青年优秀人才培养行动 （）
