Exploratory Application of Bacteria: A Self-Healing Concrete Review

Self-healing concrete is one of the practical and effective ways to intelligently respond to cracks and lessen or even completely fix the crack. This method aids in crack repair by generating calcium carbonate crystals from bacteria that obstruct the pores and microcracks in concrete. A critical review of the self-healing technique will narrow down the different methods and approaches to utilizing this technique which is the objective of this paper. The family Bacillus genera are the most used bacteria in the literature review. It is utilized by the method of direct application and immobilized encapsulation. Therefore, various types of experiments on specimens of varying sizes have been used by various researchers for their study of bacterial concrete in comparison to conventional concrete. However, the self-healing technique is still new due to a lack of introduction and exposure in the civil engineering industry. Therefore, the proper procedure or standard should be established for proper application in practical engineering.