The effect of a tailored electro-migrating corrosion inhibitor on the corrosion performance of chloride-contaminated reinforced concrete

被引：32
作者：
Fei, F. -L. [1 ]
Hu, J. [1 ,2 ]
Yu, Q. -J. [1 ,2 ]
Wei, J. -X. [1 ,2 ]
Nong, Y. -B. [1 ]
机构：
[1] S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China
[2] S China Univ Technol, Guangdong Low Carbon Technol Engn Ctr Bldg Mat, Guangzhou 510640, Guangdong, Peoples R China
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2015年 / 66卷 / 10期
基金：
中国国家自然科学基金;
关键词：
STEEL;
D O I：
10.1002/maco.201508231
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, the corrosion performance of chloride-contaminated reinforced concrete in the presence of the electrochemically injected (ECI) imidazoline quaternary ammonium salt (IQS) corrosion inhibitor was investigated, by using electrochemical measurements and surface analysis. The XPS tests showed that ECI treatment not only accelerated the migration rate of IQS corrosion inhibitor in concrete, but also effectively extracted Cl-ions out of concrete, which is beneficial for preventing the corrosion initiation of the reinforcement; further, a larger current density was related to a faster migration rate of IQS corrosion inhibitor. The electrochemical measurements indicated that the ECI treatment significantly increased the corrosion resistance of the reinforcement. The surface observation of the reinforcement revealed that a less amount of corrosion products formed on the reinforcement surface for specimens with the ECI treatment. The related corrosion inhibition mechanisms of the electrochemically injected IQS to embedded reinforcement were also discussed.
引用
收藏
页码：1039 / 1050
页数：12
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