Repairing the Cracks on Concrete Surfaces Using Bio Concrete: A Review

Authors

  • R. Saranya, N.N. Ezhilarasan, N. Ezhil Maran

Abstract

The formation of crack was formed by different phenomenon in a concrete structure. The crack formation decreases the strength and durability of concrete.[4] To restoration the cracks occurred in concrete surface, the cost for repairing and maintenance was too high. To overcome this, the self-healing mechanism introduced in the concrete. In the self-healing mechanism, the healing was done by using bacteria known as bacillus subtilis and the calcium lactate powder. The combination of bacteria and calcium lactate forms the white precipitate which is known as limestone.[7] The bacteria introducing into the concrete increase the strength and durability of concrete. The limestone was formed by the chemical reaction of calcium lactate, water, CO2 and other chemicals. This type of concrete used in the real time application is eco-friendly to environment.[6] The bacteria which introduced in the concrete property of alkali resistance and it can withstand the stresses produce in the concrete. This highly desirable because the process of crack remediation is natural. It reduces the water absorption and water permeability compared to normal concrete. In this concrete the corrosion resistance was high.[8]Crack repairing bio concrete is best than epoxy treatment.Bactria increases the conventional concrete's resilience, water porosity, sturdiness and compressive strength.

 Keywords:Bacillus subtilis, concrete, Self-healing, Calcium lactate, compressive strength.

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Published

2020-05-18

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Section

Articles