Paper Contents
Abstract
Due to shrinkage reactions of setting concrete and tensile strains present in set structures, cracks in concrete may barely be completely prevented. These fissures reduce the durability of concrete because they offer a simple route for the passage of liquids and gases that may contain hazardous materials. The reinforcement will corrode if microcracks spread to it, which could result in damage to both the concrete and the reinforcement. It is quite creative to use bacteria-induced carbonate precipitation to seal the fissures. The amount of dissolved inorganic carbon, pH, calcium ion concentration, and the existence of nucleation sites are some of the variables that affect the microbial precipitation. Additionally, the high alkaline environment of concrete, which limits bacterial development, is a key barrier when using bacteria to repair fractures in concrete. Therefore, the appropriate steps must be performed to safeguard microorganisms in concrete. Concrete is in touch with air, water, and moisture when fractures form. When water or moisture interacts with bacteria, the bacteria become active and produce lime, which causes fissures to close on their own. Bacterial concrete offers greater compressive strength in a similar manner. A concrete building or component's durability can be improved by using Bacillus Subtilis to repair fractures in the concrete surface. Buildings made of bacterial concrete require less maintenance and have greater durability and corrosion resistance, which bacterial concrete provides. As a difficult composition for self-repairing and increasing the compressive strength of the concrete, bacterial concrete is now accepted in the building sector. In a seismic zone, bacterial concrete also contributes in the early stages.
Copyright
Copyright © 2023 MD. SHAHID. This is an open access article distributed under the Creative Commons Attribution License.
