Review paper on Self healing Concrete

Abstract

Crack formation increases the permeability of concrete to detrimental substances including different types of chemicals, gasses and water, which upon contact with concrete leads to significant impairment in various properties of concrete including strength, durability etc. Self-healing concrete is considered remedy for this durability issue. Various review papers on self-healing concrete are published. In this paper, various processes of self healing are reviewed (natural, chemical and biological). The main focus of the study is for the biological processes. This paper discusses the introduction of bacteria into the concrete, where the cracks in concrete are healed by induction of specific bacteria in mortar and concrete. This research also emphasizes on assessment of various effects of bacterial concrete on different properties of concrete, (Compressive strength, Split Tensile strength, Durability, Flexural Strength).