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Use of Biochemical to Produce Selfhealing Concrete


Kishor B Vaghela , Government Engineering College, Rajkot; Bamata Sneha M, Government Engineering College, Rajkot; Goswami Preksha R, Government Engineering College, Rajkot; Joshi Zeel M, Government Engineering College, Rajkot; Kalena Jyoti R, Government Engineering College, Rajkot


Bacterial Concrete, Calcite Precipitation, Bacillius Subtilis, Self-Healing Concrete, Crack Mechanism


The concrete is widely used construction material in the world. It has very good compressive strength but it is weak in tension. A typical durability-related phenomenon in many concrete constructions is crack formation. While larger cracks hamper structural integrity, also smaller sub-millimeter sized cracks may result in durability problems as particularly connected cracks increase matrix permeability. Ingress water and chemicals can cause premature matrix degradation and corrosion of embedded steel reinforcement. A novel strategy to restore or remediate such structures is bio mineralization of calcium carbonate using microbes. There are millions of bacteria available, and certain of it can be used in the construction industry for enhancement of the overall construction. Recently it is found that microbial mineral precipitation resulting from metabolic activities of favorable microorganisms in concrete improved the overall behavior of concrete. The Application of Specific Calcite Mineral Precipitating Bactria for Concrete Repair & Plugging Of voids And Cracks in Concrete Has Been Recently Investigated. The Possibilities Of Using Specific Bacillus Bacteria As Sustainable And Concrete Embedded Self-healing Agent Was Studied & Results From Current Studies Are Discussed. The present study investigated the effects of Bacillus Subtilis Jc3 on compressive strength and water-absorption tests. The results showed a 16% increase in compressive strength of cement concrete with the addition of bacterial cells. Treated cubes absorbed three times less water than control cubes as a result of microbial calcite deposition. Different proportions 105,106,107,108 and 109 cells/ml concentration can be added but by studying of research paper we adopt optimum concentration 107cells/ml in concrete to check the compressive strength and water-absorption tests.

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Manuscript Id :IJSTEV3I12087
Published in :Volume : 3, Issue : 12
Publication Date: 01/07/2017
Page(s): 194-199
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