Electrochemical characteristic analysis of corrosion of coated steel bars in magnesium oxychloride concrete

doi:10.1680/jemmr.19.00055

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	Electrochemical characteristic analysis of corrosion of coated steel bars in magnesium oxychloride concrete
	Wen, Shao-Yong 2; Qiao, Hong-Xia 1,2; Wang, Peng-Hui 2; Yang, Tian-Xia 2; Yang, Zhen-Qing 2
刊名	Emerging Materials Research
	2019-06-01
卷号	8 期号:4 页码:696-703
关键词	Bars (metal) Chlorine compounds Concretes Electrochemical corrosion Magnesium compounds Oxide minerals Pitting Polarization Scanning electron microscopy Soil cement Steel corrosion Sulfur compounds Underground corrosion Application prospect Corrosion current densities Electrochemical characteristics Magnesium oxychloride Magnesium oxychloride cement Open circuit potential Polarization resistances Structural buildings
ISSN号	20460147
DOI	10.1680/jemmr.19.00055
英文摘要	In view of the service life of structural buildings of reinforced magnesium oxychloride concrete in western saline soil and the corrosion of chlorine ion content of magnesium oxychloride cement on steel bars, coatings are used to alleviate the degree of corrosion in different environments. The open-circuit potential, polarization resistance and corrosion current density of coated and bare steel bars in different environments were analyzed using a Z350 electrochemical workstation. The products were also analyzed by scanning electron microscopy and X-ray diffraction microtests. The tests showed that an zincite (XMT) coating can protect steel bars from corrosion under different environments. The corrosion current densities of coated steel in sulfate, chloride and water were 5·26, 2·33 and 2·86% of that of bare steel. The average value of the polarization resistance of the coated steel bars was about five times that of the bare steel bars. There were loose porous layers and massive corrosion on the bare steel surface, while the surface of the coated steel had only pitting corrosion. Therefore, the anticorrosion effect of the XMT coating on steel bars in magnesium oxychloride concrete was obtained, so that concrete with magnesium oxychloride-coated reinforcement has better application prospects in saline soil. © 2019 ICE Publishing: All rights reserved.
WOS研究方向	Materials Science
语种	英语
出版者	ICE Publishing
WOS记录号	WOS:000509386300023
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150521]
专题	土木工程学院
作者单位	1.Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, China 2.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou, China;
推荐引用方式 GB/T 7714	Wen, Shao-Yong,Qiao, Hong-Xia,Wang, Peng-Hui,et al. Electrochemical characteristic analysis of corrosion of coated steel bars in magnesium oxychloride concrete[J]. Emerging Materials Research,2019,8(4):696-703.
APA	Wen, Shao-Yong,Qiao, Hong-Xia,Wang, Peng-Hui,Yang, Tian-Xia,&Yang, Zhen-Qing.(2019).Electrochemical characteristic analysis of corrosion of coated steel bars in magnesium oxychloride concrete.Emerging Materials Research,8(4),696-703.
MLA	Wen, Shao-Yong,et al."Electrochemical characteristic analysis of corrosion of coated steel bars in magnesium oxychloride concrete".Emerging Materials Research 8.4(2019):696-703.