High Performance Bacterial Concrete

Concrete though being used and adopted as an ideal construction material because of its easy availability, low cost, good viscosity, good compressive strength etc. but it has some drawback also, the major drawback of concrete is its low tensile strength due to which micro-cracks occur when the structure is subjected to sustained loading and exposed to aggressive environmental conditions results in to decreasing the life of the structure. Concrete durability determines service life of structures. It can though, be weakened by aggressive environmental conditions. The problems related to durability and repair systems are due to lack of suitable concrete materials. The use bacteria for concrete repairing and plugging of pores and cracking in concrete have been explored. There are total three concentrations are used for making of High Performance Bacterial Concrete which is 103, 105 and 107. The properties of hardened concrete were assessed through compressive strength and water absorption test and durability characteristics were explored by alkali attack test, chloride resistance test, sulphate attack test, water permeability and sorptivity test.