Influence of chloride ion on depassivation of passive film on galvanized steel bars in concrete pore solution

doi:10.1016/j.conbuildmat.2018.01.174

	Influence of chloride ion on depassivation of passive film on galvanized steel bars in concrete pore solution
	Zheng, Haibing 1,2,3; Dai, Jian-Guo 2; Li, Weihua 1; Poon, Chi Sun 2
	2018-03-30
发表期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
卷号	166 页码:572-580
通讯作者	Li, Weihua(liweihue@qdio.ac.cn) ; Poon, Chi Sun(cecspoon@polyu.edu.hk)
摘要	This work aimed at studying the depassivation mechanism of the passive film on galvanized steel bar in concrete pore solution with different concentrations of chloride ion. The results showed that in a saturated Ca(OH)(2) solution, the critical chloride values for the depassivation of the passive films formed on galvanized steel bars and zinc metal specimens were 0.2 M and 0.3 M respectively. When the Cl- concentration was lower than the critical value, the donor density of the passive film increased and thus the protective property reduced with increasing the concentration of chloride ion, which could be interpreted by the point defect model (PDM). The corrosion products formed on the galvanized steel surface could inhibit the further ingress of the chloride ions and enhance the protective property, while such effect was not obvious for the zinc metal. (C) 2018 Elsevier Ltd. All rights reserved.
关键词	Chloride ions Passive film Corrosion Galvanized steel Concrete pore solution
DOI	10.1016/j.conbuildmat.2018.01.174
收录类别	SCI
语种	英语
资助项目	Hong Kong Branch of National Engineering Research Center for Steel Construction[1-BBYP] ; Hong Kong Polytechnic University[1-ZVGE] ; National Science Fund for Distinguished Young Scholars[51525903] ; Hong Kong Branch of National Engineering Research Center for Steel Construction[1-BBYP] ; Hong Kong Polytechnic University[1-ZVGE] ; National Science Fund for Distinguished Young Scholars[51525903]
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS记录号	WOS:000428491300053
出版者	ELSEVIER SCI LTD
引用统计	被引频次：40[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/158463
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Li, Weihua; Poon, Chi Sun
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 2.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Zheng, Haibing,Dai, Jian-Guo,Li, Weihua,et al. Influence of chloride ion on depassivation of passive film on galvanized steel bars in concrete pore solution[J]. CONSTRUCTION AND BUILDING MATERIALS,2018,166:572-580.
APA	Zheng, Haibing,Dai, Jian-Guo,Li, Weihua,&Poon, Chi Sun.(2018).Influence of chloride ion on depassivation of passive film on galvanized steel bars in concrete pore solution.CONSTRUCTION AND BUILDING MATERIALS,166,572-580.
MLA	Zheng, Haibing,et al."Influence of chloride ion on depassivation of passive film on galvanized steel bars in concrete pore solution".CONSTRUCTION AND BUILDING MATERIALS 166(2018):572-580.

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Influence of chlorid（2054KB）	期刊论文	出版稿	限制开放	CC BY-NC-SA	浏览