摘要
混凝土修补的耐久性问题日益受到关注。本文采用拉拔法对钢筋混凝土修补梁新老混凝土的界面 粘结强度进行了为期３年的系统测试。比较了粘结强度随时间的变化规律，分析了不同界面处理剂对耐久性的 影响。同时也提出了拉拔法测试界面强度的要点。
An experimental study on the bonding strength of the new-to-old concrete interface in repaired reinforced concrete beams is carried out by using pull-off method. The age difference between the new and old concrete is three months. The test results are shown that the bonding strength increases in the first one and half years and then decreases in the following one and half years. A relationship between the taling strength and time is obtained. We discuss the effects of interface agents on the bonding strength. The key points of the Pull - off method for the bonding strength test are also presented.
出处
《土木工程学报》
EI
CSCD
北大核心
2001年第1期30-32,共3页
China Civil Engineering Journal
基金
国家攀登计划(B)"重大土木水利工程安全性与耐久性的基础研究"项目
广东省自然科学基金
关键词
钢筋混凝土
梁
界面粘结强度
耐久性
试验
durability, Pull -- off method, wired reinforced concrete, new-to-old concrete interface
