Study on the durability of MOCRC under constant-current-accelerated corrosion

doi:10.1680/jemmr.19.00155

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	Study on the durability of MOCRC under constant-current-accelerated corrosion
	Li, Yuanke; Qiao, Hongxia; Guo, Xiangke; Wang, Penghui; Chen, Kefan
刊名	Emerging Materials Research
	2020-07-07
卷号	9 期号:3 页码:668-678
关键词	Bars (metal) Concrete construction Corrosion rate Elastic moduli Electrolytes Magnesium compounds Morphology Quality control Reinforced concrete Steel corrosion Underground corrosion Accelerated corrosion Accelerated corrosion tests Corrosion current densities Corrosion evaluation Dynamic elastic moduli Electrochemical performance Evaluation parameters Natural environments
ISSN号	20460147
DOI	10.1680/jemmr.19.00155
英文摘要	To investigate the durability of magnesium (Mg) oxychloride-coated reinforced concrete (MOCRC) and the deviation from the natural corrosion process of the electrified accelerated corrosion test in reinforced concrete, the authors used the electrified accelerated corrosion test with saline soil as an electrolyte. A quality test, a dynamic elastic modulus test, a crack-width test, an electrochemical performance test and a microscopic test were conducted regularly. The test results show that the relative quality evaluation parameter ω 1, the relative dynamic elastic modulus evaluation parameter ω 2 and the relative corrosion evaluation parameter ω 3, which characterise the degradation of MOCRC, all gradually decrease as the electrification time increases. Failure standards were reached at 24, 21 and 21 days, respectively. Analysis of morphology, corrosion current density and corrosion rate shows that the morphology of the coated steel bar under accelerated corrosion is consistent with natural corrosion. Using saline soil as the electrolyte of the accelerated corrosion system can simulate steel bar corrosion in a natural environment better than a traditional salt solution can. © 2020 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:000582600100010
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150676]
专题	土木工程学院
作者单位	School of Civil Engineering, Lanzhou University of Technology, Lanzhou, China
推荐引用方式 GB/T 7714	Li, Yuanke,Qiao, Hongxia,Guo, Xiangke,et al. Study on the durability of MOCRC under constant-current-accelerated corrosion[J]. Emerging Materials Research,2020,9(3):668-678.
APA	Li, Yuanke,Qiao, Hongxia,Guo, Xiangke,Wang, Penghui,&Chen, Kefan.(2020).Study on the durability of MOCRC under constant-current-accelerated corrosion.Emerging Materials Research,9(3),668-678.
MLA	Li, Yuanke,et al."Study on the durability of MOCRC under constant-current-accelerated corrosion".Emerging Materials Research 9.3(2020):668-678.