An Art of Review of Improving Soil Strength Using Microbes

International Journal of Civil Engineering

© 2025 by SSRG - IJCE Journal

Volume 12 Issue 3

Year of Publication : 2025

Authors : Nisha K. Singh, Ajanta Kalita

10.14445/23488352/IJCE-V12I3P111

How to Cite?

Nisha K. Singh, Ajanta Kalita, "An Art of Review of Improving Soil Strength Using Microbes," SSRG International Journal of Civil Engineering, vol. 12,  no. 3, pp. 112-125, 2025. Crossref, https://doi.org/10.14445/23488352/IJCE-V12I3P111

Abstract:

Most of the soil found has very little strength. There are different methods of stabilising and increasing the strength of the parent soil, such as the addition of chemicals or additives. One of the emerging methods is Microbial Induced Calcite Precipitation (MICP). This MICP technique is an eco-friendly advanced technology used for soil stabilising by using microorganisms, i.e. bacteria. The microbial activities are responsible for the change in the properties of the soil. Different studies have been conducted, and different laboratory tests have been performed to analyse the effect of MICP technology on the soil. It is seen that there is the formation of calcium carbonate precipitate which is responsible for the change in the soil parameter. The formation of Calcium carbonate intact the soil particles decreases the voids and increases the friction, stability and strength of the soil. However, the application of MICP is still very rare as very few studies have been done on this topic. This paper reviews the MICP techniques in detail, the strength mechanism, factors that need to be considered while adopting these techniques, the different procedures and approaches followed by the researchers and the change in the soil properties that stabilise the soil.

Keywords:

Bio cementation, Biotechniques, MICP, Microstructural, Soil stabilisation.

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