SELF HEALING CONCRETE – A SOLUTION TO CRACK FORMATION

Abstract

Concrete is a homogenous mixture and has a tendency to form cracks under different conditions which reduce the life of the concrete structure so that there is a need to repair these cracks. Repairing of these cracks usually need big machines and instruments which increase the cost and high time-consuming. Thus to solve these problem bacterial self-healing concrete is developed. This technique is highly attractive because the treatment of crack remediation is eco-friendly and natural. The paper discusses the mechanical strength of conventional and bacterial concrete containing E-coli, Pseudofirmus, and Bacillus Subtilis with different percentages 1%, 2%, 3%, 4%, and 5%. From the research, it is shown that there is a significant increase in the strength of concrete by using bacteria. Microbial metabolic activities are responsible for enhancing strength and durability. This technique is called microbial induced calcite precipitation (MICP). This technique comes under the biomineralization category.