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表面处理技术提高混凝土内置钢筋耐久性的研究
引用本文:邹群,水中和,徐昌盛,陈克勤,萧以德.表面处理技术提高混凝土内置钢筋耐久性的研究[J].装备环境工程,2012,9(4):19-22,63.
作者姓名:邹群  水中和  徐昌盛  陈克勤  萧以德
作者单位:1. 武汉理工大学,武汉430070
2. 武汉工程大学,武汉430073
3. 武汉材料保护研究所,武汉430030
4. 武汉铁路职业技术学院,武汉430072
摘    要:采用热喷涂Zn金属涂层、涂覆环氧树脂涂层和电沉积Zn/钝化等表面处理方式,对混凝土内置钢筋进行处理,通过电化学交流阻抗谱技术(EIS),探讨处理后的钢筋在混凝土中的腐蚀行为,并与未经防护的钢筋进行了比较。结果发现,在混凝土包覆的条件下,三种涂(镀)层对抑制混凝土内置钢筋的腐蚀均具有明显作用;相比之下,环氧涂层(保证涂层不遭受机械损伤或焊接破坏)抑制钢筋腐蚀的效果更好。

关 键 词:混凝土  钢筋腐蚀  表面处理  交流阻抗
收稿时间:2012/5/12 0:00:00
修稿时间:2012/8/15 0:00:00

Effect of Surface Treatment on Corrosion of Rebar Embedded in Concrete
ZOU Qun,SHUI Zhong-he,XU Chang-sheng,CHEN Ke-qin and XIAO Yi-de.Effect of Surface Treatment on Corrosion of Rebar Embedded in Concrete[J].Equipment Environmental Engineering,2012,9(4):19-22,63.
Authors:ZOU Qun  SHUI Zhong-he  XU Chang-sheng  CHEN Ke-qin and XIAO Yi-de
Institution:1. Wuhan University of Technology, Wuhan 430070, China; 2. Wuhan Institute of Technology, Wuhan 430073, China; 3. Wuhan Research Institute of Meterial Protection, Wuhan 430030, China; 4. Wuhan Railway Vocational College of Technology, Wuhan 430072, China)
Abstract:Surface treatments of thermal spraying Zn metal coatings, epoxy resin coating, and electrodeposited Zn/ passivation were applied on built-in rebar in reinforced concrete. Electrochemical impedance spectroscopy (EIS) was applied to explore the corrosion behavior of the rebar and compare with steel without protection. The results showed that in the concrete-clad condition, the three kinds of coating (plating) layer have significant effect for preventing general corrosion of the rebar; in contrast, epoxy coatings (guarantee coating against mechanical damage or weld damaged) has better corrosion inhibition effect.
Keywords:concrete  corrosion of rebar  surface treatment  A  C  impedance spectrum
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