Chapter
Apr 26, 2012
The Influence of Injection Conditions and Soil Types on Soil Improvement by Microbial Functions
Authors: Y. Inagaki [email protected], M. Tsukamoto [email protected], H. Mori [email protected], T. Sasaki [email protected], K. Soga, Ph.D. [email protected], A. Al Qabany [email protected], and T. Hata, Ph.D. [email protected]Author Affiliations
Publication: Geo-Frontiers 2011: Advances in Geotechnical Engineering
Abstract
Research has begun on Microbial Carbonate Precipitation (MCP), which shows promise as a soil improvement method because of its low carbon dioxide emission compared to cement stabilized agents. MCP produces calcium carbonate from carbonates and calcium in soil voids through ureolysis by "Bacillus Pasteurii". This study focuses on how the amount of calcium carbonate precipitation is affected by the injection conditions of the microorganism and nutrient salt, such as the number of injections and the soil type. Experiments were conducted to simulate soil improvement by bio-grouting soil in a syringe. The results indicate that the amount of precipitation is affected by injection conditions and soil type, suggesting that, in order for soil improvement by MCP to be effective, it is necessary to set injection conditions that are in accordance with the soil conditions.
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Published In
Geo-Frontiers 2011: Advances in Geotechnical Engineering
Pages: 4021 - 4030
Copyright
© 2011 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- [Inorganic compounds]
- Calcium carbonate
- Carbonation
- Chemical processes
- Chemicals
- Chemistry
- Climates
- Engineering materials (by type)
- Environmental engineering
- Geomechanics
- Geotechnical engineering
- Materials engineering
- Meteorology
- Microbes
- Organic compounds
- Organisms
- Precipitation
- Soil cement
- Soil classification
- Soil dynamics
- Soil mechanics
- Soil properties
- Soil stabilization
Authors
Affiliations
Soil Mechanics and Dynamics Research Team, Material and Geotechnical Engineering Group, Public Works Research Institute, Japan, 1-6 Minamihara, Tsukuba, Ibaraki 305-8516, Japan.E-mail: [email protected]
Soil Mechanics and Dynamics Research Team, Material and Geotechnical Engineering Group, Public Works Research Institute, Japan, 1-6 Minamihara, Tsukuba, Ibaraki 305-8516, Japan.E-mail: [email protected]
Soil Mechanics and Dynamics Research Team, Material and Geotechnical Engineering Group, Public Works Research Institute, Japan, 1-6 Minamihara, Tsukuba, Ibaraki 305-8516, Japan.E-mail: [email protected]
Soil Mechanics and Dynamics Research Team, Material and Geotechnical Engineering Group, Public Works Research Institute, Japan, 1-6 Minamihara, Tsukuba, Ibaraki 305-8516, Japan.E-mail: [email protected]
University of Cambridge Department of Engineering Geotechnical Research Group, Trumpingon Street, Cambridge CB2 1PZ UK.E-mail: [email protected]
University of Cambridge Department of Engineering Geotechnical Research Group, Trumpingon Street, Cambridge CB2 1PZ UK.E-mail: [email protected]
Nagano National College of Technology, Department of Civil Engineering, 716 Tokuma, Nagano City, Nagano Prefecture, 381-8550, Japan.E-mail: [email protected]
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