COMPARATIVE STUDY ON BACTERIAL CONCRETE USING BACILLUS SPHAERRICUS AND ESCHERICHIA COLI
Author(s):
K.KEERTHANA, A.RANJANI, N.K.AMUDHAVALLI
Keywords:
Bacillus Sphaericus, calcite precipitation, Escherichia coli, Self healing bacterial concrete
Abstract
Concrete is the most predominant building material in construction industries. Due to improper design, temperature effects like freezing, thawing and shrinkage which causes deformation and produce cracks in the structures. Cracks are one of the major weaknesses of concrete which leads to the structural failure. To remediate cracks in structures, bacterial concrete is new innovative technique in which Bacteria are used. During the mixing of concrete, bacteria produces calcium carbonate precipitate will cure the cracks automatically. The efforts has been made to study about the performance of Bacillus Sphaericus and Escherichia coli in concrete and also it deals with the comparison of bacterial concrete in strength aspects The bacterial strains produce calcite precipitation was examined by X-ray diffraction (XRD) analysis and visualized by Scanning Electron Microscope(SEM). The concrete mixture was prepared with each bacterial strains at 103, 106 & 109 concentrations of cells/ml of water. The mechanical properties of concrete such as compressive strength, Split tensile strength and flexural strength were evaluated. The concrete with Bacillus Sphaericus at 109 concentration gives higher strength than the concrete with Escherichia coli.
Article Details
Unique Paper ID: 143352

Publication Volume & Issue: Volume 2, Issue 10

Page(s): 169 - 171
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