• Yogesh S. Sawalkar
• Aparna Gaikwad
• Piyusha G. Pansare
• Srushti D. Patil
• Vaishnavi K. Edke

In this review paper about the micro-cracks are the main cause to structural failure. One way to circumvent costly manual maintenance and repair is to incorporate an autonomous self -healing mechanism in concrete. One such an alternative repair mechanism is currently being studied, i.e. a novel technique based on the application of bio-mineralization of bacteria in concrete. The applicability of specifically calcite mineral precipitating bacteria for concrete repair and plugging of pores and cracks in concrete has been recently investigated and studies on the possibility of using specific bacteria as a sustainable and concrete -embedded selfhealing agent was studied and results from ongoing studies are discussed. Synthetic polymers such as epoxy treatment etc. are currently being used for repair of concrete are harmful to the environment, hence the use of a biological repair technique in concrete is focused. In Concrete, cracking is a common phenomenon developed due to relatively low tensile strength. High tensile stresses may be developed in concrete due to external loads, imposed deformations, plastic shrinkage, plastic settlement and expansive reactions. Proper and immediate treatment should be done in order to prevent expansion of cracks which may eventually be of higher cost. For crack repair, a variety of traditional repair systems are available which possess a number of disadvantageous aspects such as different thermal expansion coefficients, environmental and hazards of health. Bacterially induced calcium carbonate precipitation has been proposed as an alternative and environmental friendly crack repair technique. It is found that microbial mineral precipitation as a result from metabolic activities of favorable bacteria in concrete improved the overall behavior of concrete. It is expected that further development of this techniques will result in a more durable, sustainable and crack free concrete that can be used effectively for constructions in wet atmospheres where corrosion of reinforcement affects the durability, permeability and strength of concrete. Thus this paper is an attempt to define bacterial concrete, its classification and types, mechanism adopted, advantages, disadvantages and its application in the field of construction by literature view are discussed

Bio-Concrete,Self-Healing Concrete,Microbes,Concrete,Mix Design

"Bio-Concrete (Smart Concrete) Used in Construction Industry:A Review.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 5, page no.i170-i181, May-2023, Available :http://www.jetir.org/papers/JETIR2305853.pdf

"Bio-Concrete (Smart Concrete) Used in Construction Industry:A Review.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 5, page no. ppi170-i181, May-2023, Available at : http://www.jetir.org/papers/JETIR2305853.pdf