Aerobic non-ureolytic bacteria-based self-healing cementitious composites: A comprehensive review

The use of bacteria for self-healing cement-based materials has shown great potential in recent years. Microbially induced calcium carbonate precipitation (MICP) is a novel technology that relies on the metabolic activity bacteria, principally from genus Bacillus and close relatives, to precipitate (CaCO3) inside cracks heal them. Among different can be used this purpose, aerobic non-ureolytic have promising results improve healing efficiencies engineering properties cementitious composites more sustainable way. Unfortunately, research involving these specific species are scattered throughout literature. Therefore, review aims present one place state-of-the-art knowledge relevant development rely bacteria. In review, most advances regarding various normally (e.g., B. cohnii, pseudofirmus, etc.), methods embedding effects performance composites, outdoors trials economic feasibility systems reported, principal findings discussed summarised at end each section. Finally, gaps future work identified presented last