气候变化领域集成服务门户(CCPortal): Life Prediction and Long-Term Durability of Coated Steel Bars in Magnesium Oxychloride Concrete

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DOI	10.1007/s12205-020-1970-5
	Life Prediction and Long-Term Durability of Coated Steel Bars in Magnesium Oxychloride Concrete
	Wang, Penghui; Qiao, Hongxia; Chen, Kefan; Li, Yuanke; Feng, Qiong
发表日期	2020
ISSN	1226-7988
EISSN	1976-3808
起始页码	2120
结束页码	2131
卷号	24 期号:7
英文摘要	The solution to the problem of corrosion of the steel bars in magnesium oxychloride cement concrete (MOCC) is to apply a coating that protects the steel. To investigate the coating's long- term protective effect on the steel, a solution immersion accelerated corrosion test was carried out on coated reinforced MOCC for up to 2,160 days. Electrochemical tests were conducted every 90 days to measure the polarization curve and AC impedance during the steel bars' corrosion process. Then, the corrosion current density that characterizes the corrosion of a coated steel bar was used as a degradation index, and the time to the coated steel bar's corrosion was predicted based on the Wiener function. It was concluded that after 2,160 days of solution immersion, the coated steel bars' corrosion current density was 0.063 mu A center dot cm(-2), indicating that the coating protected the steel bars in MOCC from corrosion well. Thdroughout the immersion process, the specimen's corrosion current density showed a steady and increasing trend, and its polarization impedance showed a volatile growth trend. The degradation of the coated steel bars also obeyed the Wiener degradation process, and the bars reached a severely rusted state at 21,800d with a corrosion time of R-0.6(t) is 10,650d.
英文关键词	Long-term durability; Solution immersion accelerated test; Polarization curve; AC impedance; Wiener function; Life prediction
WOS研究方向	Engineering
WOS类目	Engineering, Civil
WOS关键词	REMAINING USEFUL LIFE ; POLARIZATION CURVES ; CEMENT ; ACID
WOS记录号	WOS:000534835500001
来源期刊	KSCE JOURNAL OF CIVIL ENGINEERING
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239346
作者单位	[Wang, Penghui; Qiao, Hongxia; Chen, Kefan; Li, Yuanke; Feng, Qiong] Lanzhou Univ Technol, Key Lab Disaster Prevent & Mitigat Civil Engn Gan, Lanzhou 730050, Peoples R China; [Qiao, Hongxia] Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
推荐引用方式 GB/T 7714	Wang, Penghui,Qiao, Hongxia,Chen, Kefan,et al. Life Prediction and Long-Term Durability of Coated Steel Bars in Magnesium Oxychloride Concrete[J]. 中国科学院西北生态环境资源研究院,2020,24(7).
APA	Wang, Penghui,Qiao, Hongxia,Chen, Kefan,Li, Yuanke,&Feng, Qiong.(2020).Life Prediction and Long-Term Durability of Coated Steel Bars in Magnesium Oxychloride Concrete.KSCE JOURNAL OF CIVIL ENGINEERING,24(7).
MLA	Wang, Penghui,et al."Life Prediction and Long-Term Durability of Coated Steel Bars in Magnesium Oxychloride Concrete".KSCE JOURNAL OF CIVIL ENGINEERING 24.7(2020).