INFULENCE OF BACTERIA FOR CRACK REPAIRING IN SELF HEALING CONCRETE
Keywords:
GGBS, fly ash, Bacillus Pasteurii, Cells Concentration, Compressive strength, Acid Attack testAbstract
Cement was replaced with three percentages 30%, 40% and 50% with GGBS by weight and 20% fly ash, with a cells concentration of 106cells/ml of bacteria were used in making the concrete mixes. The tests were performed at the age of 7, 28 and 91 day. Concrete crack up to 0.5 mm width can be healed in 30 days’ time period which shows effective solution in cracks. Oxygen is the agent that can induce corrosion but the bacteria will feed oxygen so the corrosion can be also reduce. The bacterial self-healing is novel approach towards the producing durable and crack free concrete by using the Industrial waste which leads to reduce the cost of repairing the cracks by conventional methods and reduce the chances to again development of crack in concrete. For this process bacteria’s such as B.subtiles, B. spharies and B. pasteurii etc.
