Abstract
The many physiological circumstances that affect concrete structures cause a variety of durability problems, which ultimately cause the building to lose strength and sustain irreparable damage. The pore structure of concrete is the primary factor contributing to the degradation of the durability and mechanical properties of concrete. Recent years have seen the development of microbiologically induced calcium carbonate precipitation by bacteria as a method for consolidating various building materials as well as improving the characteristics of concrete and repairing concrete structures. The use of bacterial concrete, often known as bio-concrete, to improve the strength, mechanical properties, and permeation of concrete has been the subject of several studies in recent years. The study's objectives are to test and analyse the compressive strength of concrete cubes, determine the best dosage of bacteria to employ, and learn more about the characteristics of cracked specimens by using the ureolytic, gram-positive (spore-forming), facultative aerobic Bacillus Subtilis.