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Paper Titles
Tests of Mechanical Characteristics of Steel Fiber Reinforced Concrete Wall-Beams Simply Supported
p.3355
The Analysing of Coupled Bending Tosion and Shear-Lag of Curved Box Girder Bridge Considering Prestress and Initial Curvature
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Modelling of Carbon Dioxide Diffusion into Surface-Biodeposited Concrete
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The Comparison of Coral Concrete and other Light Weight Aggregate Concrete on Mechanics Performance
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Remediation and Improvement of Concrete by Bacterial Mediated Carbonate Deposition
p.3373
The Strength of the Steel Bar Embedded in the Masonry Wall
p.3377
The Application of Parametric Design in Landmark Building Creation
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Test Study on Size Effect of Flexural Performance of RC Free Beams
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The Finite Element Analyses for Beam Strengthen-Bolt Spliced Connection for Steel Moment Frame
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Remediation and Improvement of Concrete by Bacterial Mediated Carbonate Deposition

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Abstract:

Bio-deposition has led to the exploration of remediation and improvement technique in the field of cementitious materials. The aim of this study was to investigate the effects of bio-deposited carbonate on parameters affecting concrete properties and the effects of bio-deposition on the durability of concrete specimens. The remediation efficacy of cracks in concrete was studied through compressive strength test and flexural failure test. Water absorption and the resistance towards carbonation of concrete were analyzed by water absorptivity test and concrete accelerated carbonation test, respectively. Experimental results show that bio-deposition is able to make the improvement in concrete compressive strength and the remediation of cracks. Bacterial deposition of calcite on the surface of the concrete specimens results in a decrease of capillary water uptake and carbonation rate constant, and an increase in resistance towards degradation processes.

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Periodical:

Advanced Materials Research (Volumes 446-449)

Pages:

3373-3376

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.446-449.3373

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Cite this paper

Online since:

January 2012

Authors:

Pei Hao Li, Kun Wang, Zhong Jin Wang

Keywords:

Bacterial Concrete, Biodeposition, Carbonate, Remediation, Self-Healing

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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