SELF HEALING CONCRETE

Abstract

Concrete is no good when cracked as it defeats the very purpose of its use. Cracks in concrete can be seen
in almost every structure around the world. Though small cracks in buildings does not imply that buildings or
structures are not in good shape, but it surely says that the structure is deteriorating. So what does self healing in
concrete does? It actually heals small cracks in concrete which eventually allows t increase the service life of a
structure. When cracks appear in a concrete structure, the reinforcement comes in contact with CO2 , water and other
chemicalspresent in the atmosphere. The process of repairing cracks when they form is termed as self healing
concrete. Self healing concrete is formed by using bacteria , therefore also called as bacterial concrete. Some types of
bacteria used are Bacillus Sphaericus, Bacillus Subtilis,etc.