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Effect of reagents concentration on biocementation of tropical residual soil

This study explores the feasibility of Bacillus subtilis and optimum reagents concentration used in Microbial-Induced Calcite Precipitation (MICP) treatment of tropical residual soil. Experiment was conducted to investigate the effect of cementation reagents concentration toward MICP treatment. The...

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Main Authors: Chiet, K. T. P., Kassim, K. A., Chen, K. B., Martula, U., Yah, C. S., Arefnia, A.
Format: Conference or Workshop Item
Published: Institute of Physics Publishing 2016
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.utm.my/id/eprint/73113/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84989361153&doi=10.1088%2f1757-899X%2f136%2f1%2f012030&partnerID=40&md5=9ba653e28ee7c95de73fc88ab9dd709a
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spelling my.utm.731132017-11-26T08:07:47Z http://eprints.utm.my/id/eprint/73113/ Effect of reagents concentration on biocementation of tropical residual soil Chiet, K. T. P. Kassim, K. A. Chen, K. B. Martula, U. Yah, C. S. Arefnia, A. TA Engineering (General). Civil engineering (General) This study explores the feasibility of Bacillus subtilis and optimum reagents concentration used in Microbial-Induced Calcite Precipitation (MICP) treatment of tropical residual soil. Experiment was conducted to investigate the effect of cementation reagents concentration toward MICP treatment. The performance of MICP treatment was assessed by measurement of the soil shear strength and calcite content. Based on the experimental results, it is discovered that the cementation reagent concentration has significantly affected on the performance of MICP treatment. The results suggested that the most preferable MICP treatment reagents concentration is 0.25M with the presence of Bacillus subtilis; using these treatment parameters, both UCS value and calcite content of treated soil had increased about 38% and 65.6% respectively. However, the reduction in UCS value was manifested for those samples treated at higher reagents concentration (0.35M); this phenomenon is attributed to the salinity of reagents where high salinity is not favourable to the bacteria growth and microbial activity; subsequently, this resulted in a consequential decrease in shear strength of the treated soil. Institute of Physics Publishing 2016 Conference or Workshop Item PeerReviewed Chiet, K. T. P. and Kassim, K. A. and Chen, K. B. and Martula, U. and Yah, C. S. and Arefnia, A. (2016) Effect of reagents concentration on biocementation of tropical residual soil. In: Soft Soil Engineering International Conference 2015, SEIC 2015, 27 October 2015 through 29 October 2015, Malaysia. https://www.scopus.com/inward/record.uri?eid=2-s2.0-84989361153&doi=10.1088%2f1757-899X%2f136%2f1%2f012030&partnerID=40&md5=9ba653e28ee7c95de73fc88ab9dd709a
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Chiet, K. T. P.
Kassim, K. A.
Chen, K. B.
Martula, U.
Yah, C. S.
Arefnia, A.
Effect of reagents concentration on biocementation of tropical residual soil
description This study explores the feasibility of Bacillus subtilis and optimum reagents concentration used in Microbial-Induced Calcite Precipitation (MICP) treatment of tropical residual soil. Experiment was conducted to investigate the effect of cementation reagents concentration toward MICP treatment. The performance of MICP treatment was assessed by measurement of the soil shear strength and calcite content. Based on the experimental results, it is discovered that the cementation reagent concentration has significantly affected on the performance of MICP treatment. The results suggested that the most preferable MICP treatment reagents concentration is 0.25M with the presence of Bacillus subtilis; using these treatment parameters, both UCS value and calcite content of treated soil had increased about 38% and 65.6% respectively. However, the reduction in UCS value was manifested for those samples treated at higher reagents concentration (0.35M); this phenomenon is attributed to the salinity of reagents where high salinity is not favourable to the bacteria growth and microbial activity; subsequently, this resulted in a consequential decrease in shear strength of the treated soil.
format Conference or Workshop Item
author Chiet, K. T. P.
Kassim, K. A.
Chen, K. B.
Martula, U.
Yah, C. S.
Arefnia, A.
author_facet Chiet, K. T. P.
Kassim, K. A.
Chen, K. B.
Martula, U.
Yah, C. S.
Arefnia, A.
author_sort Chiet, K. T. P.
title Effect of reagents concentration on biocementation of tropical residual soil
title_short Effect of reagents concentration on biocementation of tropical residual soil
title_full Effect of reagents concentration on biocementation of tropical residual soil
title_fullStr Effect of reagents concentration on biocementation of tropical residual soil
title_full_unstemmed Effect of reagents concentration on biocementation of tropical residual soil
title_sort effect of reagents concentration on biocementation of tropical residual soil
publisher Institute of Physics Publishing
publishDate 2016
url http://eprints.utm.my/id/eprint/73113/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84989361153&doi=10.1088%2f1757-899X%2f136%2f1%2f012030&partnerID=40&md5=9ba653e28ee7c95de73fc88ab9dd709a
_version_ 1643656579417899008
score 13.211869

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