IJEP 43(2): 142-146 : Vol. 43 Issue. 2 (February 2023)
Vishvajit Bhaskar Kokate and Shashi Ranjan Kumar*
Oriental University, Department of Civil Engineering, Indore, Madhya Pradesh – 453 555, India
Abstract
The study was carried out to analyze the improvement in electrical resistivity of bacteria based self-healing mortar mixture. 6 specimens of 70x70x70 mm were cast using mortar with/without bacteria and cured in different environments, that is water, urea-calcium chloride (U-Ca-Cl) solution or urea-calcium lactate (U-Ca-La) environment for a period of 28 and 91, respectively. The specimens were subjected to electrical resistivity tests after 7, 28, 49, 70 and 91 days of curing. Results reveal that presence of bacteria and curing the specimen in a proper environment leads to a mortar with higher electrical resistance and lower water absorption. It was also found that mortar cured in urea-calcium-lactate (U-Ca-La) environment had better electrical resistance compared to mortar cured in urea-calcium chloride (U-Ca-Cl) environment. The electrical resistivity of u-ca-La based mortar was 12.3% and 23.3% higher than U-Ca-Cl based mortar cured for 28 and 91 days, respectively.
Keywords
Bacteria, Electrical resistivity, Urea-calcium-chloride, Urea-calcium-lactate
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