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.

中文翻译：

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利用新的局部分离细菌菌株来提高砂浆的机械性能

砂浆和建筑物的常规修复和维护方法对其周围环境和美学价值具有不利的副作用。该研究报告了局部分离的细菌芽孢杆菌的影响。应变 SKC 对影响砂浆性能的参数。研究了非生物控制和细菌改性砂浆以确定它们的性能差异。细菌改性砂浆的抗压强度成功提高，比非生物控制砂浆的抗压强度高两倍，从而增加了密度。细菌改性砂浆上的碳酸钙晶体沉积降低了孔隙率和渗透率。通过SEM图像和XRD分析证实了碳酸钙的细菌沉积。