Mitigation of sulphate-reducing bacteria attack on the corrosion of 20SiMn steel rebar in sulphoaluminate concrete using organic silicon quaternary ammonium salt
文献类型：期刊论文
| 作者 | Etim, Ini-Ibehe Nabuk2,3,4; Dong, Junhua2; Wei, Jie2; Nan, Chen2; Daniel, Enobong Felix2; Subedi, Dhruba Babu2; Xu, Dake5; Yadav, Amar Prasad1,2; Su, Mingzhong6; Ke, Wei2 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2020-10-10 |
| 卷号 | 257页码:17 |
| 关键词 | Sulphoaluminate cement Steel reinforced concrete Microbial corrosion SRB Organic silicon quaternary ammonium salt |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2020.119047 |
| 通讯作者 | Dong, Junhua(jhdong@imr.ac.cn) ; Wei, Jie(jwei@imr.ac.cn) |
| 英文摘要 | 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. |
| 资助项目 | National Natural Science Foundation of China[51501201] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000545559400001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/139706]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Dong, Junhua; Wei, Jie |
| 作者单位 | 1.Tribhuvan Univ, Cent Dept Chem, Kathmandu, Nepal 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 4.Akwa Ibom State Univ, Dept Marine Biol, PMB 1167, Uyo, Nigeria 5.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 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. |
入库方式： OAI收割
来源：金属研究所
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