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Healing of Cracked Concrete by Sporosarcina pasteurii Mediated Carbonate Deposition

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Abstract:

A remediation technique of cracked concrete by bacterial mediated carbronate deposition i.e. bio-deposition is discussed. Bio-deposition is a technique that comes from a broader category of biomineralization. The aim of this study was to investigate the plugging of artificially cracked concrete using bacteria Sporosarcina pasteurii and combined with sand as a filling material in artificially made cuts in concrete specimens which was cured in urea and Ca2+ medium and to research the effects on the compressive strength and flexural load of healing of concrete specimens by bio-deposition. The remediation efficacy of cracks in concrete was studied through compressive strength test and flexural failure test. Experimental results show that bio-deposition is able to make the improvement in concrete compressive strength and flexural load. The technique can be used to improve the compressive strength and flexural load of cracked concrete specimens and the remediation of cracks.

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Applied Mechanics, Materials, Industry and Manufacturing Engineering View Preview

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Periodical:

Applied Mechanics and Materials (Volume 164)

Pages:

103-106

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.164.103

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Online since:

April 2012

Authors:

Pei Hao Li, Bo Jin

Keywords:

Bacterial, Bio-Deposition, Cracked Concrete, Healing, Sporosarcina pasteurii

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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