Experimental Study on Steel Reinforcement Protection in Magnesium Oxychloride Cement Concrete under Sulfate Environment

doi:10.3969/j.issn.0258-2724.2017.02.006

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	Experimental Study on Steel Reinforcement Protection in Magnesium Oxychloride Cement Concrete under Sulfate Environment
	Qiao, Hongxia 1,3; Gong, Wei 3; Wang, Penghui 3; Chen, Guangfeng 2; Cheng, Qianyuan 3
刊名	Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University
	2017-04-01
卷号	52 期号:2 页码:247-253
关键词	Bars (metal) Cements Chlorine compounds Corrosion Corrosion rate Corrosion resistance Corrosion resistant coatings Electrochemical corrosion Magnesium compounds Polarization Reinforced concrete Silicates Sulfur compounds Coated steel Corrosion current densities Corrosion potentials Electrochemical parameters Magnesium oxychloride cement Magnesium sulfate solution Polarization curves Steel reinforcements
ISSN号	02582724
DOI	10.3969/j.issn.0258-2724.2017.02.006
英文摘要	Aiming at the low brine corrosion resistance of ordinary silicate reinforced concrete in salt lake areas of western China, a magnesium oxychloride cement reinforced concrete with higher brine corrosion resistance was fabricated. The polarization curves and electrochemical parameters, including corrosion potential, corrosion current density and corrosion rate, of steel bars with different coatings were investigated in magnesium sulfate solution using an electrochemical workstation measurement system, and the corrosion and protection of steel reinforcements in the chloride magnesium cement concrete with high chloride content were studied. The results show that the bare steel bar in the magnesium oxychloride cement concrete suffered severe corrosion, the steel bars with DACROMET, BENICE, ZINTEK and MAGNI coatings presented low corrosion, and the steel bar with GEOMET coating was far from corrosion. Specifically, the corrosion rate of steel bars with coatings of DACROMET, BENICE, ZINTEK, MAGNI and GEOMET was 1/36-1/19, 1/20-1/13, 1/31-1/16 and 1/91-1/50, respectively, while the value was 1/22-1/16 for the bare steel bar. This proves that coating technology can slow down the corrosion rate of steel bars in magnesium cement concrete. © 2017, Editorial Department of Journal of Southwest Jiaotong University. All right reserved.
语种	中文
出版者	Science Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114951]
专题	土木工程学院机电工程学院
作者单位	1.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou; 730050, China; 2.School of Earth and Space Sciences, Peking University, Beijing; 100871, China 3.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Qiao, Hongxia,Gong, Wei,Wang, Penghui,et al. Experimental Study on Steel Reinforcement Protection in Magnesium Oxychloride Cement Concrete under Sulfate Environment[J]. Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University,2017,52(2):247-253.
APA	Qiao, Hongxia,Gong, Wei,Wang, Penghui,Chen, Guangfeng,&Cheng, Qianyuan.(2017).Experimental Study on Steel Reinforcement Protection in Magnesium Oxychloride Cement Concrete under Sulfate Environment.Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University,52(2),247-253.
MLA	Qiao, Hongxia,et al."Experimental Study on Steel Reinforcement Protection in Magnesium Oxychloride Cement Concrete under Sulfate Environment".Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University 52.2(2017):247-253.