Chloride binding of monosulfate hydrate (AFm) and its effect on steel corrosion in simulated concrete pore solution

doi:10.1016/j.jobe.2023.105945

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	Chloride binding of monosulfate hydrate (AFm) and its effect on steel corrosion in simulated concrete pore solution
	Zhang, Yuguo 3,4,5; Sun, Congtao 3,4,5; Zhang, Peng 5; Sun, Ming 3,4; Geng, Yuanjie 2,3; Zhao, Maomi 1; Fan, Liang 3,4; Liu, Nazhen 3,4; Duan, Jizhou 3,4
刊名	JOURNAL OF BUILDING ENGINEERING
	2023-05-15
卷号	67 页码:14
关键词	Chloride binding Steel corrosion Chloride threshold value Passivation film AFm
DOI	10.1016/j.jobe.2023.105945
通讯作者	Sun, Congtao(suncongtao@qdio.ac.cn) ; Zhang, Peng(zhp0221@163.com)
英文摘要	The impact of monosulfate hydrate (AFm) on chloride (Cl- ) binding and steel corrosion in simulated concrete pore solutions (SCPSs) was evaluated. In the SCPS with AFm added, a high concentration of Cl- promoted the Cl- binding amount per unit AFm without producing Kuzel's salt. The Cl- binding capacity of AFm could be improved by appropriately changing the amount of AFm with a constant Cl- concentration. The addition of AFm to the SCPS shortened the passivation time and created a more stable passivation film of the steel. The SO42- produced by the AFm binding with Cl- preferentially reacted with AFm to form AFt, and it affected the stability of the Friedel's salt to release Cl- . The addition of AFm raised the chloride threshold value (CTV) for steel corrosion. However, after reaching the CTV, the corrosion rate of steels increased dramatically, due to the release of the bound Cl- .
资助项目	Natural Science Key Foundation of Shandong Province[ZR2020KE046] ; National Natural Science Foundation of China[41827805]
WOS关键词	SULFATE ; MAGNESIUM ; SEAWATER ; BEHAVIOR ; RISK ; IONS
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:001012834900001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/182367]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者	Sun, Congtao; Zhang, Peng
作者单位	1.Guangxi Acad Sci, Inst Marine Corros Protect, Guangxi Key Lab Marine Environm Sci, Nanning 530007, Peoples R China 2.Inner Mongolia Univ Sci & Technol, Sch Civil Engn, Baotou 014010, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, Qingdao 266237, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 5.Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yuguo,Sun, Congtao,Zhang, Peng,et al. Chloride binding of monosulfate hydrate (AFm) and its effect on steel corrosion in simulated concrete pore solution[J]. JOURNAL OF BUILDING ENGINEERING,2023,67:14.
APA	Zhang, Yuguo.,Sun, Congtao.,Zhang, Peng.,Sun, Ming.,Geng, Yuanjie.,...&Duan, Jizhou.(2023).Chloride binding of monosulfate hydrate (AFm) and its effect on steel corrosion in simulated concrete pore solution.JOURNAL OF BUILDING ENGINEERING,67,14.
MLA	Zhang, Yuguo,et al."Chloride binding of monosulfate hydrate (AFm) and its effect on steel corrosion in simulated concrete pore solution".JOURNAL OF BUILDING ENGINEERING 67(2023):14.