A self-healing method for concrete cracks based on microbial-induced carbonate precipitation: bacteria, immobilization, characterization, and application
Lu Jiang, Pengjun Li, Wenjing Wang, Yu Zhang, Zhu Li
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引用次数: 0
Abstract
AbstractMicrobial-induced carbonate precipitation (MICP) technology has gained significant traction as an eco-friendly, cost-effective, and intelligent self-healing method for concrete cracks. The harsh service environment and high alkalinity of cement matrices have posed a significant challenge to the survival and growth of bacteria, which is crucial for the success of MICP technologies in concrete components. This article aims to present an up-to-date overview of the current research status of self-healing concrete cracks utilizing MICP technology. Specifically, it comprehensively reviews the selection of mineralization repair systems, encompassing repair mechanisms, effects, processes, nutrient addition sequences, and carrier selection. Furthermore, various characterization methods for evaluating the self-healing ability of concrete are explored, accompanied by an in-depth analysis of practical applications of self-healing concrete. Finally, this paper highlights the pressing issues facing this technology while outlining promising directions for future advancement.Keywords: MICPself-healing concretecarriercharacterizationapplications Author contributionsLu Jiang: methodology, investigation, conceptualization. Pengjun Li: writing original draft. Wenjing Wang: writing-review and editing, funding acquisition. Yu Zhang: writing-review and editing. Zhu Li: supervision, resources, investigation.Additional informationFundingFunding was provided by the National Natural Science Foundation of China (Nos. 52208258 and 52078473) and Natural Science Foundation of Ningxia Hui Autonomous Region, China (Nos. 2023AAC05011 and 2022AAC03072).
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
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