腐蚀环境中磷酸镁水泥基TRC约束钢筋混凝土柱黏结性能试验研究  

Bond behavior of RC column confined by magnesia-phosphate cement based TRC in corrosion environment

作　　者：贾磊[1] 尹红宇[2] 荀勇[2] 

机构地区：[1]江苏大学土木工程与力学学院,江苏镇江212013 [2]盐城工学院土木工程系,江苏盐城224051

出　　处：《混凝土》2017年第6期36-39,43,共5页Concrete

基　　金：国家自然科学基金项目(51478408)

摘　　要：对氯盐等腐蚀环境中磷酸镁水泥基TRC材料约束钢筋混凝土柱的黏结性能进行了研究,考虑锈蚀率、腐蚀环境等因素的影响。通过试验测试了不同条件下钢筋与混凝土柱的黏结性能,分析了腐蚀环境中黏结性能的变化机理,并对其加固效果进行了评价。结果表明:与未加固构件相比,腐蚀率0、2.5%、5%的加固试件黏结强度分别增加了79%、92%、176%;加固后继续腐蚀的试件在腐蚀程度较轻时黏结强度要高于未继续腐蚀的试件,对应于腐蚀率0、2.5%、5%,提高幅度分别为21.9%、8.4%、6.9%。It focus on the bond behavior of reinforced concrete column strengthened by TRC, considering the influence of corrosion rate, corrosion environment and other factors on the bond performance.The bond behavior between steel bar and concrete column was tested under different conditions, and the deterioration mechanism of the bond performance was analyzed, and the effect of reinforcement was evaluated compared with unstrengthened member.For the reinforced specimensof corrosion rate 0,2.5%, 5%,the bonding performance were increased by 79%, 92% and 176%.Forthose specimens which are under slight corrosion again after reinforcement, the bond strength is higher than those without further corrosion specimens, increased by 21.9%, 8,4% and 6.9%, corresponding to corrosion rate of 0,2.5%, 5%, respectively.

关 键 词：织物增强混凝土 加固 磷酸钾镁水泥 

分 类 号：TU528.01[建筑科学—建筑技术科学]