Inhibition resistance and mechanism of migrating corrosion inhibitor on reinforced concrete under coupled carbonation and chloride attack

doi:10.1016/j.jobe.2023.107398

	Inhibition resistance and mechanism of migrating corrosion inhibitor on reinforced concrete under coupled carbonation and chloride attack
	Wang, Hao 1; Jiang, Minghui 2; Hang, Meiyan 1; Yang, Yubin 3; Zhou, Xuebin 4; Liu, Xiangju 5; Xu, Guangfei 3
	2023-10-01
发表期刊	JOURNAL OF BUILDING ENGINEERING
卷号	76 页码:19
通讯作者	Jiang, Minghui([email protected])
摘要	Corrosion of steel bars in the marine environment is an important reason to reduce the service life of reinforced concrete structures. In this study, an amino alcohol migrating corrosion inhibitor (MCI) was coated on the concrete surface, which was then subjected to a simulated marine atmospheric environment by carbonation and salt spraying. The carbonation depth, chloride concentration of concrete, electrochemical performance of steel bars and mass loss rate of steel bar were determined to evaluate the corrosion inhibition performance of MCI. NELD-BS610 hardened concrete bubble spacing coefficient analyzer and scanning electron microscopy (SEM) were applied to analyze the pore structure parameters in concrete and the corrosion behavior of steel bar, respectively. The test results showed that MCI could alleviate the deterioration of concrete induced by accelerated carbonation and chloride attack, and delay the carbonation effect. After 7 days of accelerated carbonation and 35 days of chloride attack, the carbonation depth and chloride concentration of concrete coated with MCI were 16.07% and 16.93% lower than those of concrete uncoated with MCI, respectively. MCI could migrate to the steel bar surface of steel bar to form a protective film, significantly improving the electrochemical performance of the steel bar, and the inhibition efficiency of MCI was about 66.07 similar to 97.91%. Besides, MCI could also reduce the mass loss rate of steel bars and porosity of concrete induced by carbonation and chloride attack. For the specimens coated with MCI, the mass loss rates of steel bar decreased by 20.31 similar to 39.78%, and pores with sizes of 1.0 similar to 0.2 mu m in concrete reduced by 59.10 similar to 76.38%. The results of this research are purposeful for alleviating the corrosion damage problems of reinforced concrete in marine areas.
关键词	Reinforced concrete Carbonation Chloride attack Migrating corrosion inhibitor Inhibition mechanism
DOI	10.1016/j.jobe.2023.107398
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52168033]; Shandong Provincial Natural Science Foundation[ZR2022QB128]
WOS研究方向	Construction & Building Technology ; Engineering
WOS类目	Construction & Building Technology ; Engineering, Civil
WOS记录号	WOS:001048128900001
出版者	ELSEVIER
WOS关键词	MILD-STEEL ; DURABILITY ; PROTECTION ; BEHAVIOR ; NITRITE ; TIME
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/182814
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Jiang, Minghui
作者单位	1.Inner Mongolia Univ Sci & Technol, Sch Civil Engn, Baotou 014010, Inner Mongolia, Peoples R China 2.Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Minist Educ, Beijing 100124, Peoples R China 3.Baotou Iron & Steel Vocat Tech Coll, Dept Architecture & Civil Engn, Baotou 014010, Inner Mongolia, Peoples R China 4.Xian Univ Architecture & Technol, Sch Civil Engn, Xian 710055, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Wang, Hao,Jiang, Minghui,Hang, Meiyan,et al. Inhibition resistance and mechanism of migrating corrosion inhibitor on reinforced concrete under coupled carbonation and chloride attack[J]. JOURNAL OF BUILDING ENGINEERING,2023,76:19.
APA	Wang, Hao.,Jiang, Minghui.,Hang, Meiyan.,Yang, Yubin.,Zhou, Xuebin.,...&Xu, Guangfei.(2023).Inhibition resistance and mechanism of migrating corrosion inhibitor on reinforced concrete under coupled carbonation and chloride attack.JOURNAL OF BUILDING ENGINEERING,76,19.
MLA	Wang, Hao,et al."Inhibition resistance and mechanism of migrating corrosion inhibitor on reinforced concrete under coupled carbonation and chloride attack".JOURNAL OF BUILDING ENGINEERING 76(2023):19.

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