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Performance and Evaluation of Bacterial Concrete

Author(s):

Gorde Pravin Jaysing , Dr. D Y Patil Institute of Engineering Management & Research, Akurdi, Pune; Sneha Priyant Sawant, Dr. D Y Patil Institute of Engineering Management & Research, Akurdi, Pune; Sachin Sampat Nalawade, Dr. D Y Patil Institute of Engineering Management & Research, Akurdi, Pune

Keywords:

Bacterial Concrete, Cube Tests, Preparation, Mechanism, Crack Healing

Abstract

Concrete is a homogenous mixture and cracks in concrete are inevitable so there is a need for repair which affects the economic life of any structure. To overcome this problem an inherent biomaterial is developed, a self-repairing material which can remediate the cracks in concrete. Bacterial concrete is a technique which is highly desirable because the calcium precipitation is induced as a result of microbial activities. This helps in increasing the strength and durability of concrete. Also various other tests carried out on the cube and its results are stated in the paper.. The mechanism of crack healing in bacterial concrete presumably occurs through metabolic conversion of calcium lactate to calcium carbonate what results in crack-sealing. This biochemically mediated process resulted in efficient sealing of sub-millimetre sized (0.15 mm width) cracks. As per the results, it is clearly observed that there is increase in compressive strength, tensile strength and durability in bacterial concrete as compared with normal concrete. This is the main objective of the bacterial concrete for which it was introduced. Various tests which are carried out to study these properties of concrete are compressive strength test, Split tensile test. Scanning Electron Microscope ( S.E.M ) is used to study the growth of bacteria in the concrete.

Other Details

Paper ID: IJSRDV5I30225
Published in: Volume : 5, Issue : 3
Publication Date: 01/06/2017
Page(s): 193-196

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