Effect of Urease Dosages in Biocementation Process for Improving Strength of Sandy Soil

Janjit Iamchaturapatr; Keeratikan Piriyakul

doi:10.4028/www.scientific.net/AMR.931-932.698

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 931-932Effect of Urease Dosages in Biocementation Process...

Effect of Urease Dosages in Biocementation Process for Improving Strength of Sandy Soil

Abstract:

Soil biocementation is the new technique using biochemical process to initiate the crystal forms of calcium carbonate (CaCO₃) to bind the soil particles resulting in soil mechanical improvement. This research examines the effect of urease (UR) dosages on the strength development of sandy soil in biocemented sand reactor (BSR). Our results found that urease dosages between 5-30% (v/v) affected the strength development in sandy soil in term of shear modulus (G). Addition of UR resulted on an increase of solution pH. Highest solution pH during the treatment was found at UR 20%, as well as highest G value. Formation of CaCO₃ in biocemented sand could be useful for the stabilization of the sand or earth structures.

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Periodical:

Advanced Materials Research (Volumes 931-932)

Pages:

698-702

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.931-932.698

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Online since:

May 2014

Authors:

Janjit Iamchaturapatr*, Keeratikan Piriyakul

Keywords:

Biocemented Sand, Ground Improvement, Shear Modulus, Ureolysis

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