[01] Rajesh K. Verma, Bio concrete Laboratory, Environmental Science and Technology Group, CSIR-Central Building Research Institute, Roorkee, India. [02] Leena Chaurasia, Bio concrete Laboratory, Environmental Science and Technology Group, CSIR-Central Building Research Institute, Roorkee, India. [03] Vishakha Bisht, Bio concrete Laboratory, Environmental Science and Technology Group, CSIR-Central Building Research Institute, Roorkee, India. [04] Manisha Thakur, Bio concrete Laboratory, Environmental Science and Technology Group, CSIR-Central Building Research Institute, Roorkee, India.

Mortar and concrete are the most widely used building materials all over the world as they are cheap, easily available and convenient to cast. But crack in these materials is a common phenomenon during its service life due to many reasons, if unattended timely, will result in long-term structural deterioration with high level of risk and maintenance cost. Currently, epoxy, resins, epoxy mortar and other synthetic mixtures are used for remediation of cracks. Bacteria from various natural habitats have frequently been reported to precipitate calcium carbonate both in natural and laboratory conditions. Application of bacteria based mineralization concept has lead to the potential invention of a new biomaterial that can fill the cracks and fissures in mortar and concrete materials. The present review include bio-cementation in concrete, bacterial carbonate precipitation, chemical process and their self healing activity on the bacteria incorporated materials by application of microbiologically induced calcite precipitation.

Bio-Mineralization, Bio-Cementation, Bacterial Carbonate Precipitation, Self Healing, Cracks

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