硅灰固定化细菌细胞对钢筋混凝土的缓蚀作用

IF 4.7 3区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Journal of Sustainable Cement-Based Materials Pub Date : 2023-06-22 DOI:10.1080/21650373.2023.2223209

K. Anand, S. Goyal, M. Reddy

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引用次数: 0

摘要

近年来，微生物诱导碳酸钙沉淀（MICCP）被认为是一种在实验室规模上预防钢筋混凝土（RC）腐蚀的新方法。在这项研究中，开发了用于建筑业的基于硅灰（SF）的接种物，其保质期为180 具有在RC结构中诱导MICCP所需的有效细胞计数。将SF基接种物固定在新拌混凝土中，研究其缓蚀潜力。钢筋混凝土试件固化28 天，并受到外加电流引起的氯化物腐蚀。电化学和机电阻抗（EMI）技术分别用于RC试样的腐蚀评估。结果表明，SF基载体可以有效地用于防腐，新兴的EMI技术可以有效地监测腐蚀过程。

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Corrosion inhibition in reinforced concrete using silica fume immobilized bacterial cells

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.

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来源期刊

Journal of Sustainable Cement-Based Materials Multiple-

CiteScore

6.60

自引率

15.90%

发文量

期刊介绍： The Journal of Sustainable Cement-Based Materials aims to publish theoretical and applied researches on materials, products and structures that incorporate cement. The journal is a forum for discussion of research on manufacture, hydration and performance of cement-based materials; novel experimental techniques; the latest analytical and modelling methods; the examination and the diagnosis of real cement and concrete structures; and the potential for improved cement-based materials. The journal welcomes original research papers, major reviews, rapid communications and selected conference papers. The Journal of Sustainable Cement-Based Materials covers a wide range of topics within its subject category, including but are not limited to: • raw materials and manufacture of cement • mixing, rheology and hydration • admixtures • structural characteristics and performance of cement-based materials • characterisation techniques and modeling • use of fibre in cement based-materials • degradation and repair of cement-based materials • novel testing techniques and applications • waste management