Evaluation of Strength and Durability Properties for Various Amount of Bacillus Subtilis Bacteria in Concrete

Abstract

Concrete is one of the predominantly used material in the construction industry. It is important to reduce problems on concrete are disintegration, erosion, etc. One such drawback that concerns the construction industry is that the concrete tends to crack when subjected to tension. This then promotes seepage of water causing corrosion of steel reinforcement making the whole structure vulnerable. MICP process by the bacillus subtilis bacteria is considered to avoid this kind of failure that adversely affects the strength and durability of structures. As the grain to grain calcite precipitation in the concrete during the MICP process improves the bond strength between the cement particles. This paper discusses the experimental study conducted to evaluate the compressive, flexural, and split tensile strength of bacteria concrete as well as the durability properties like water absorption and acid attack resistance of bacteria concrete with various amounts of Bacillus subtilis.