Experimental Investigations on Self-Healing Concrete with Pseudomonas Fluorescens Bacteria and Calcium Lactate
DOI:
https://doi.org/10.17762/msea.v71i4.565Abstract
Bacterial concrete has recently developed as a therapeutic technique for mending fractures in constructions such as bridges, RCC buildings, RCC pipes, canal lining, pavement, and so on. Crack formation is a very common occurrence in concrete structures because it allows water and other types of chemicals to enter the concrete through the cracks and reduces its strength. It also has an effect on the reinforcement when it comes into contact with water, carbon dioxide, and other chemicals. Repairing cracks in concrete requires frequent maintenance and specialised treatment, both of which can be prohibitively expensive. So, to address this issue, Henk Jonkers developed bacterial concrete to mend fractures in concrete structures. This study indicated that specific types of microorganisms can be an effective way for repairing fractures in existing concrete buildings.In this paper, experimental investigation done to arresting the cracks in the concrete using Pseudomonas fluorescens bacteria and calcium lactate. The selection of bacteria depends on its survival in alkaline environment. In this study Pseudomonas fluorescens bacteria with calcite lactate is used in different percentages such as 5% ,10%and 15% of cement weight for M40 grade concrete. An empirical relation between flexural strength and compressive strength is proposed in the form of ft = 0.808 fck0.443.