Abstract
This is the review based study which is beneficial and development step that include bacteria, types of bacteria on the basis of classification and effects of microbes on different conditions in concrete on the basis of its properties like strength, durability, absorption of water, insertion of chloride and mineral precipitates of bacteria are good techniques for the development of bio concrete. This also includes the harmful effects of bio-concrete and the diseases which are caused by microorganisms. The self-healing ability is not comprehensively tested or analyses at micro, macro and Nano scale. In macrostructure, self-healing ability is based upon durability criteria of absorption of water, resistance with chloride and acid. Microstructure level’s tests are done to maximize the validity of consequences. Nanostructure based study is few but it’s important to review that all the ways of self-healing efficiency of cement depending material is for developing the new and fresh experimental techniques. Effective self-healing is usually occurred due to the use of polymers, microorganism and additional cementing material. It is the key issue to find out the self-healing efficiency’s effect to sealing the crack width successfully. It is reported so far that at least crack of 0.97 mm is healed. Only in one paper it is reported that the depth of healing of maximum size of crack is 5 mm.
