The Effect of Bacteria to Steel Corrosion in Concrete : A Systematic Review

Abstract

Concrete are one of the most commonly used building materials and are particularly vulnerable to crack formation. These cracks make reduction of concrete service life as a result causes high cost on repair. While crack formation cannot be avoided, many techniques for healing cracks have been in place. Some of the concrete crack treatment method like application of chemical and polymer have environmental risk and it is successful in short term. Therefore, treatment that is environmentally friendly is needed in current generation. A self-healing bio concrete is the environmentally friendly, long last and good in repair cracks by itself. Although the bacterial conversion in bio concrete helps increase the durability of steel reinforced concrete structure by healing cracks but the impact of bacteria to steel in concrete structure is in early stage. This study provides an explanation and overview of calcium carbonate microbial approaches (CaCO3) and the impact of bacteria in to steel in bio concrete. From this study, it helps identify the reaction and effect of bacteria in steel which includes the corrosion rate as well as factors that affect the bio concrete steel.