Corrosion inhibition in reinforced concrete using silica fume immobilized bacterial cells

被引:2
作者
Anand, Kamal [1 ]
Goyal, Shweta [1 ]
Reddy, M. Sudhakara [2 ]
机构
[1] Thapar Inst Engn & Technol, Dept Civil Engn, Patiala, Punjab, India
[2] Thapar Inst Engn & Technol, Dept Biotechnol, Patiala, Punjab, India
关键词
corrosion; reinforced concrete; bacteria; electrochemical measurement; electromechanical impedance (EMI); PRECIPITATING BACTERIA; PERFORMANCE EVALUATION; STEEL; MORTAR; ZEOLITE; REBAR;
D O I
10.1080/21650373.2023.2223209
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Recently, microbially induced calcium carbonate precipitation (MICCP) has been considered a novel method in corrosion prevention of reinforced concrete (RC) at the lab scale. In this investigation, silica fume (SF) based inoculum for the construction industry was developed and possessed a shelf life of 180 days with an effective cell count required to induce MICCP in RC structures. The SF-based inoculum was immobilized in fresh concrete to study the corrosion mitigation potential. The RC specimens were cured for 28 days and subjected to impressed current-induced chloride corrosion. Electrochemical and electromechanical impedance (EMI) techniques were employed separately on RC specimens for corrosion assessment. The results prove that the SF-based carrier can be effectively used for corrosion prevention and that the emerging EMI technique can efficiently monitor the corrosion process.
引用
收藏
页码:1414 / 1429
页数:16
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