Utilization of a New Locally Isolated Bacterial Strain for Promoting Mechanical Properties of Mortar

Conventional reparation and maintenance method of mortars and buildings have adverse side effects on their surrounding environmental and aesthetic value. This study reported the impact of a locally isolated bacterium, Bacillus sp. strain SKC on the parameters affecting the properties of mortar. The abiotic control and bacteria-modified mortars were investigated to determine the differences in their properties. The compressive strength of the bacteria-modified mortar was successfully enhanced which was twofold higher than that of the abiotic control mortar, thus increasing the density. Calcium carbonate crystal deposition on bacteria-modified mortar reduced the porosity and permeability. The bacterial deposition of calcium carbonate was confirmed by SEM images and XRD analysis.