Comparative studies on passivation and corrosion behaviors of two types of steel bars in simulated concrete pore solution

doi:10.1016/j.conbuildmat.2020.120971

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	Comparative studies on passivation and corrosion behaviors of two types of steel bars in simulated concrete pore solution
	Cai, Yamei 1; Zheng, Haibing1 ; Hu, Xiang 1; Lu, Jianxin 1; Poon, Chi Sun 1; Li, Weihua 2,3
	2021-01-10
发表期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
卷号	266 页码:9
通讯作者	Zheng, Haibing([email protected]) ; Poon, Chi Sun([email protected])
摘要	The corrosion behavior of two types of stirrups, a plain steel bar and a ribbed steel bar, were studied in this work. The results demonstrated that a better passive state was achieved on B500, which was due to a relatively higher concentration of Fe2+ oxides at the first 2 nm depths of the film, even though B500 film had relatively less FeOx contents, because Fe2+ oxides had a better protective property than Fe3+ oxides. Furthermore, the slightly lower donor density of B500 film in the M-S analysis results presented the much less point defect in the film, showing an increase in the anti-corrosion property of passive film. These contributed to a higher chloride threshold value of B500, 4 times higher than that of 5275. Therefore, compared with 5275, B500 stirrups could be more suitable for the application in the severe service environment. (C) 2020 Elsevier Ltd. All rights reserved.
关键词	Stirrups Steel bars Corrosion Passive film Chloride threshold value
DOI	10.1016/j.conbuildmat.2020.120971
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; National Natural 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:000600793000031
出版者	ELSEVIER SCI LTD
引用统计	被引频次：22[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/337002/169511
专题	中国科学院海洋研究所
通讯作者	Zheng, Haibing; Poon, Chi Sun
作者单位	1.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China 2.Sun Yat Sen Univ, Coll Chem Engn & Technol, Tangjiawan 519082, Zhuhai, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Cai, Yamei,Zheng, Haibing,Hu, Xiang,et al. Comparative studies on passivation and corrosion behaviors of two types of steel bars in simulated concrete pore solution[J]. CONSTRUCTION AND BUILDING MATERIALS,2021,266:9.
APA	Cai, Yamei,Zheng, Haibing,Hu, Xiang,Lu, Jianxin,Poon, Chi Sun,&Li, Weihua.(2021).Comparative studies on passivation and corrosion behaviors of two types of steel bars in simulated concrete pore solution.CONSTRUCTION AND BUILDING MATERIALS,266,9.
MLA	Cai, Yamei,et al."Comparative studies on passivation and corrosion behaviors of two types of steel bars in simulated concrete pore solution".CONSTRUCTION AND BUILDING MATERIALS 266(2021):9.

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