| 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 Nabuk1,2,3; Dong, Junhua1; Wei, Jie1; Nan, Chen1; Daniel, Enobong Felix1; Subedi, Dhruba Babu1; Xu, Dake4; Yadav, Amar Prasad1,5; Su, Mingzhong6; Ke, Wei1 | |
| Corresponding Author | Dong, Junhua(jhdong@imr.ac.cn) ; Wei, Jie(jwei@imr.ac.cn) |
| 2020-10-10 | |
| Source Publication | CONSTRUCTION AND BUILDING MATERIALS
 |
| ISSN | 0950-0618 |
| Volume | 257Pages:17 |
| Abstract | 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. |
| Keyword | Sulphoaluminate cement Steel reinforced concrete Microbial corrosion SRB Organic silicon quaternary ammonium salt |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1016/j.conbuildmat.2020.119047 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51501201] |
| WOS Research Area | Construction & Building Technology ; Engineering ; Materials Science |
| WOS Subject | Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000545559400001 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/139707 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Dong, Junhua; Wei, Jie |
| Affiliation | 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 |
| Recommended Citation 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. |
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