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Feasibility Study on Biocomposite as a Self-Healer of Cracks

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Abstract

In the construction industry, durability being the critical criterion of service required to be provided by the concrete, it is of immense importance to identify and study the compatible materials to develop a self-healing concrete. This work is an attempt to study and analyze the behavioral properties at the microstructural and biochemical levels of self-healing ingredients/materials intended to be used. Based on pre-hand studies, Bacillus subtilis, Bacillus megaterium, and Lysinibacillus sphaericus encapsulated in clay pellets are selected as the self-healing microorganisms and calcium lactate as a precursor. The strength test, healing observations by microstructural analysis, and biochemical analysis prove that the selected bacterial species reveals calcite precipitation. Calcium lactate compound was also compatible to achieve the expected strength, with which Bacillus sphaericus exhibits elevated performance in the majority of the tests among the bacteria tested. The main focus of the study is on the micro-level healing mediated by the bacteria. Hence, the research work is a satisfactory approach to develop a self-healing/bio-concrete that could contribute to sustainable construction.

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Acknowledgements

The authors wish to thank the management for extending the support during the experimentation, and the authors sincerely acknowledge the same. The authors wish to appreciate and place on record the support given by the Concrete Laboratory Technical head and UG & PG students while carrying out the experimental work.

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Authors and Affiliations

  1. Department of Civil Engineering, BMS College of Engineering, Bangalore, India

    S. Girish, G. Vishaka Lingaraj & T. Soumya

  2. Medical Intern, MVJ Medical College and Research Hospital, Bangalore, India

    Ananya Girish

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  1. S. Girish
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  2. G. Vishaka Lingaraj
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  3. Ananya Girish
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  4. T. Soumya
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Correspondence to S. Girish.

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The research article is based on an original study. The authors do not have conflict of interest with the publication of this study.

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Girish, S., Lingaraj, G.V., Girish, A. et al. Feasibility Study on Biocomposite as a Self-Healer of Cracks. J. Inst. Eng. India Ser. A 103, 227–238 (2022). https://doi.org/10.1007/s40030-021-00562-9

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  • DOI: https://doi.org/10.1007/s40030-021-00562-9

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