Eighth International Conference on Case Histories in Geotechnical Engineering
Microbially Induced Calcite Precipitation Using Surfactants for the Improvement of Organic Soil
Publication: Geo-Congress 2019: Soil Improvement (GSP 309)
ABSTRACT
Microbially induced calcite precipitation (MICP) has been used for a number of years as a technique for the improvement of various geological materials. MICP has been used in a limited capacity in organic matter-rich soils with varying degrees of success. Investigators hypothesized that microbially-induced cementation of organic soil could be improved using a surfactant. Varying amounts of Sodium Dodecyl Sulfate (SDS) were added to soils of varying organic content and a mixing procedure was used to treat these soils via MICP. Treated specimens were tested for unconfined compressive strength (UCS). Results appeared to show direct relationships between SDS content and treated specimen strength although significant variability was present in the data. The addition of SDS during MICP treatment improves the organic soil strength, which is likely due to the formation of a calcium dodecyl sulfate complex and little to do with the microbially-induced calcite.
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ACKNOWLEDGEMENTS
The authors of this paper would like to acknowledge the Florida Department of Transportation for their support of this research, particularly David Horhota, Ph.D., P.E., Project Manager. The opinions, findings, and conclusions expressed in this publication are those of the authors and not necessarily those of the Florida Department of Transportation or the US Department of Transportation.
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Information & Authors
Information
Published In
Geo-Congress 2019: Soil Improvement (GSP 309)
Pages: 231 - 240
Editors: Christopher L. Meehan, Ph.D., University of Delaware, Sanjeev Kumar, Ph.D., Southern Illinois University Carbondale, Miguel A. Pando, Ph.D., University of North Carolina Charlotte, and Joseph T. Coe, Ph.D., Temple University
ISBN (Online): 978-0-7844-8211-7
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Mar 21, 2019
ASCE Technical Topics:
- Chemical compounds
- Chemicals
- Chemistry
- Climates
- Engineering materials (by type)
- Environmental engineering
- Geomechanics
- Geotechnical engineering
- Materials engineering
- Meteorology
- Microbes
- Organic chemicals
- Organic compounds
- Organic matter
- Organisms
- Pollution
- Precipitation
- Salts
- Soil cement
- Soil dynamics
- Soil mechanics
- Soil pollution
- Soil stabilization
- Soil treatment
- Sulfates
- Surface-active agents
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