View article

Cementitious composites are widely used in the construction industry around the globe. Nevertheless, these are prone to cracking because of their low tensile strength. The reinforcement provided to carry tensile stresses gets exposed to the outside environment due to cracking thereby reducing the service life of structures. The control of crack widths in concrete is thus necessary to ensure durability. Research studies have shown that bacteria exist that are able to precipitate calcite, and may thus heal cracks thereby improving the durability of concrete. This technique is highly desirable because the microbially induced calcite precipitation (MICP) is pollution-free and natural. This novel technique may also be used in protecting historical stone monuments without affecting their appearance. This article reviews the process of bioremediation of cementitious composites employed for improving their properties. Different …