Abstract: When cement concrete is subjected to significant shrinkage and settling, the existence of voids in the material may cause a decrease in performance. This study concentrated on using bacteria to decrease concrete voids and increase performance. It was discovered that the Bacillus family of bacteria were the concrete's greatest healers. In the current investigation, Bacillus megaterium bacteria from the Bacillus family were used at a concentration of 108 CFU. After seven and twenty-eight days of curing, a total of forty-eight specimens were cast and examined for mechanical strength and water absorption. In comparison to conventional M30 grade, the test results show that after 28 days of curing, the compressive, split tensile, and flexural strengths increased to 12.91%, 10.28%, and 9.02%, respectively.

Keywords: Bacterial concreate, Bacteria with cement,

| DOI: 10.17148/IARJSET.2024.115104