Mitigation of sulphate-reducing bacteria attack on the corrosion of 20SiMn steel rebar in sulphoaluminate concrete using organic silicon quaternary ammonium salt

doi:10.1016/j.conbuildmat.2020.119047

IMR OpenIR

	Mitigation of sulphate-reducing bacteria attack on the corrosion of 20SiMn steel rebar in sulphoaluminate concrete using organic silicon quaternary ammonium salt
	Etim, Ini-Ibehe Nabuk 1,2,3; Dong, Junhua 1; Wei, Jie 1; Nan, Chen 1; Daniel, Enobong Felix 1; Subedi, Dhruba Babu 1; Xu, Dake 4; Yadav, Amar Prasad 1,5; Su, Mingzhong 6; Ke, Wei 1
通讯作者	Dong, Junhua(jhdong@imr.ac.cn) ; Wei, Jie(jwei@imr.ac.cn)
	2020-10-10
发表期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
卷号	257 页码:17
摘要	This research was carried out to evaluate the effect of sulphate-reducing bacteria (SRB) on the corrosion of reinforced concrete (RC) using sulphoaluminate cement and also to proffer mitigation measure for reducing the adverse effect of SRB by adopting organic silicon quaternary ammonium salt (OSA) as a bacteriostatic agent. Three different systems were employed for this study: RC with sterilized NaCl (CS), RC with sterilized NaCl and SRB (CS-1), and RC with sterilized NaCl, SRB and OSA (CS-2). The 28 days SRB biofilm growth showed optimized number of sessile cells in the early immersion periods but reduced with extending the time. Consequently, the sessile cells induced the breakdown of the passive film through metabolic reactions of SRB. The corrosion resistance of rebar in different systems reflected by surface morphologies and electrochemical analysis follows the order of CS > CS-2 > CS-1. The proposed mitigation mechanism shows that the silicate component of the OSA adheres on steel surface to prevent the formation of biofilm while the ammonium component adsorbs on SRB cells changing the permeability of bacteria cell wall, reduces the metabolic activities of SRB leading to its death. This implies that OSA played a vital role in reducing the optimized growth of SRB and thus enhances the corrosion resistance of the rebar in concrete. (C) 2020 Elsevier Ltd. All rights reserved.
关键词	Sulphoaluminate cement Steel reinforced concrete Microbial corrosion SRB Organic silicon quaternary ammonium salt
资助者	National Natural Science Foundation of China
DOI	10.1016/j.conbuildmat.2020.119047
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51501201]
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS记录号	WOS:000545559400001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：19[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/139707
专题	中国科学院金属研究所
通讯作者	Dong, Junhua; Wei, Jie
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Akwa Ibom State Univ, Dept Marine Biol, PMB 1167, Uyo, Nigeria 4.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 5.Tribhuvan Univ, Cent Dept Chem, Kathmandu, Nepal 6.Sani Care Salon Prod Inc, Cartersville, GA USA
推荐引用方式 GB/T 7714	Etim, Ini-Ibehe Nabuk,Dong, Junhua,Wei, Jie,et al. Mitigation of sulphate-reducing bacteria attack on the corrosion of 20SiMn steel rebar in sulphoaluminate concrete using organic silicon quaternary ammonium salt[J]. CONSTRUCTION AND BUILDING MATERIALS,2020,257:17.
APA	Etim, Ini-Ibehe Nabuk.,Dong, Junhua.,Wei, Jie.,Nan, Chen.,Daniel, Enobong Felix.,...&Ke, Wei.(2020).Mitigation of sulphate-reducing bacteria attack on the corrosion of 20SiMn steel rebar in sulphoaluminate concrete using organic silicon quaternary ammonium salt.CONSTRUCTION AND BUILDING MATERIALS,257,17.
MLA	Etim, Ini-Ibehe Nabuk,et al."Mitigation of sulphate-reducing bacteria attack on the corrosion of 20SiMn steel rebar in sulphoaluminate concrete using organic silicon quaternary ammonium salt".CONSTRUCTION AND BUILDING MATERIALS 257(2020):17.