锈蚀钢筋与混凝土粘结性能退化规律的试验研究

摘要

Based on the pull out tests of bond behavior between concrete and steel bars corroded through the artificial climate accelerated corrosion technique,the average bond stress-slip curves are obtained,the effect of the degree of corrosion and stirrup on the bond behavior are analysed. The results show that as corrosion degree increases, the bond strength enhances initially and then deteriorates gradually; stirrup has a great impact on the bond behavior.%采用人工气候环境加速混凝土内钢筋锈蚀,通过对粘结试件进行拉拔试验,得到了试件的平均粘结应力-平均滑移关系曲线,分析了钢筋锈蚀程度、箍筋等对锈蚀钢筋与混凝土粘结性能的影响.结果发现:随着钢筋锈蚀程度的增加,粘结性能先略有提高而后减小；箍筋对试件的粘结性能的影响很大.