摘要
针对因钢筋腐蚀而造成镁水泥钢筋混凝土使用寿命较短的问题,制备不同涂层钢筋的镁水泥混凝土试件,通过CS350工作站及其分析软件对不同龄期试件进行测试分析,根据腐蚀电位、腐蚀电流密度、腐蚀速率及涂层电阻等电化学参数,衡量同种涂层钢筋在不同环境下的抗腐蚀性能。结果表明:锌美特涂层在三种环境下均出现低腐蚀现象,且室内自然环境下腐蚀情况最轻、自然水浸泡环境下次之,氯盐浸泡环境下最差。美加力涂层与久美特涂层在三种环境下均未出现腐蚀现象,且室内自然环境下抗腐蚀性能最好、氯盐浸泡环境下次之、自然水浸泡环境下最差;三种环境下涂层钢筋防腐性能均为:久美特涂层钢筋最好、美加力涂层钢筋次之、锌美特涂层钢筋最差;涂层钢筋在不同环境下虽然抗腐蚀性能不同,但涂层技术均可以延长镁水泥钢筋混凝土构件的使用寿命。
The summary of the research on corrosion resistance of magnesium cement reinforced concrete short service life,we tested different age specimen,which we had prepared various coating reinforced magnesium cement concrete for analysis,by CS350 workstation and its software.And we measured the same coating the corrosion resistance of reinforced in a different environment,according to the corrosion potential,corrosion current density and corrosion rate and coating resistance and electrochemical parameters.In the three environments,ZINTEK coating had low corrosion,and the corrosion conditions of indoor and natural environment are the lightest,and it is better than the environment soaked by natural water.But the performance in the environment of Chlorine salt is the worst.The reinforcement bars with MAGNI or with GEOMET had no corrosion phenomenon occurred in three kinds of environment,especially,the performance in natural and indoor environment best and natural water worst,and the performance in Chlorine salt is between the two.The anti-corrosion properties of the reinforcement bars in the three environments are:the reinforcement bars with GEOMET is the best and the reinforcement bars with MAGNI is better,and the reinforcement bars with ZINTEK was worst.Although the corrosion resistance acted differently under different environment,the coating technology could prolong the service life of the concrete member of magnesium cement.
作者
乔宏霞
杨博
路承功
金子秋
阳菲
QIAO Hong-xia;YANG Bo;LU Cheng-gong;JIN Zi-qiu;YANG Fei(Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province,Lanzhou University of Technology, Lanzhou 730050,China;Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology,Lanzhou 730050,China)
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2018年第11期3510-3516,3521,共8页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金(51468039)
甘肃省自然科学基金(1310RJZA051)
中国科学院盐湖资源与化学重点实验室开放基金(KLSLRC-KF-13-HX-8)
关键词
镁水泥混凝土
涂层钢筋
腐蚀电流密度
电化学方法
magnesium cement concrete
coated steel
corrosion current density
electrochemical method
