Study on corrosion and anticorrosion of rebar in magnesium oxychloride cement concrete

doi:10.1680/jemmr.18.00012

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Study on corrosion and anticorrosion of rebar in magnesium oxychloride cement concrete
	Gong, Wei 1; Yu, Hongfa 1; Ma, Haiyan 1; Qiao, Hongxia 2; Chen, Guangfeng 3
刊名	EMERGING MATERIALS RESEARCH
	2019-03
卷号	8 期号:1 页码:94-104
关键词	coatings material properties modelling
ISSN号	2046-0147
DOI	10.1680/jemmr.18.00012
英文摘要	In order to solve the rapid corrosion problem associated with rebar in magnesium oxychloride cement concrete, an experiment on the corrosion and anticorrosion of rebar is designed. The corrosion and anticorrosion effects of rebar are evaluated through the corrosion current density. A time-varying model of rebar corrosion in magnesium chloride cement concrete is proposed. Based on the time-varying model for rebar corrosion, the initial cracking time with magnesium oxychloride cement concrete is calculated. The results show that the test environment has little effect on exposed-rebar corrosion. The corrosion current density of the coated rebar in a water-soaking environment is greater than that for coated rebar in an indoor natural environment. Greater concrete cover depths cause more severe rebar corrosion. All cases of exposed-rebar corrosion conform to the exponential-type time-varying model, whereas coated-rebar corrosion conforms to the logarithmic-type time-varying model. The corrosion degree of the magnesium oxychloride cement exposed-rebar concrete is much greater than that for magnesium oxychloride cement coated-rebar concrete by two orders of magnitude, showing the feasibility, long-term stability and effectiveness of using coated rebar in magnesium oxychloride cement concrete.
资助项目	China National Natural Science Foundation[21276264] ; China National Natural Science Foundation[51468039]
WOS研究方向	Materials Science
语种	英语
出版者	ICE PUBLISHING
WOS记录号	WOS:000473342500013
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32071]
专题	土木工程学院
通讯作者	Gong, Wei
作者单位	1.Nanjing Univ Aeronaut & Astronaut, Dept Civil Engn, Nanjing, Jiangsu, Peoples R China 2.Lanzhou Univ Technol, Key Lab Disaster Prevent & Mitigat Civil Engn Gan, Lanzhou, Gansu, Peoples R China 3.Peking Univ, Sch Earth & Space Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Gong, Wei,Yu, Hongfa,Ma, Haiyan,et al. Study on corrosion and anticorrosion of rebar in magnesium oxychloride cement concrete[J]. EMERGING MATERIALS RESEARCH,2019,8(1):94-104.
APA	Gong, Wei,Yu, Hongfa,Ma, Haiyan,Qiao, Hongxia,&Chen, Guangfeng.(2019).Study on corrosion and anticorrosion of rebar in magnesium oxychloride cement concrete.EMERGING MATERIALS RESEARCH,8(1),94-104.
MLA	Gong, Wei,et al."Study on corrosion and anticorrosion of rebar in magnesium oxychloride cement concrete".EMERGING MATERIALS RESEARCH 8.1(2019):94-104.