Geotechnical Earthquake Engineering and Soil Dynamics V
Improved Liquefaction Resistance from Microbial Induced Carbonate Cementation
Publication: Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
ABSTRACT
Microbial induced calcium carbonate precipitation (MICP) has been shown to be an effective method to improve soil strength and stiffness, and one of the most promising applications of MICP is for liquefaction mitigation. In this paper, three silica soils with varying grain sizes were treated by MICP to a moderate level of cementation and their resistance to liquefaction is improved significantly compared to uncemented loose soil. The degree of MICP improvement appears to be influenced by the grain size and shape of the loose untreated soil. The level of excess pore water and cyclic resistance of the untreated and MICP treated soils is presented. The different response to cyclic loading after MICP treatment is compared with respect to different grain size and shape. The results show that reduction in grain size and increase in angularity result in a higher resistance to liquefaction after MICP treatment.
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Information & Authors
Information
Published In
Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
Pages: 296 - 303
Editors: Scott J. Brandenberg, Ph.D., University of California, Los Angeles, and Majid T. Manzari, Ph.D., George Washington University
ISBN (Online): 978-0-7844-8145-5
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Jun 7, 2018
ASCE Technical Topics:
- Carbonation
- Cement
- Chemical processes
- Chemistry
- Concrete
- Design (by type)
- Engineering fundamentals
- Engineering materials (by type)
- Environmental engineering
- Geomechanics
- Geotechnical engineering
- Grain (material)
- Load and resistance factor design
- Load factors
- Material mechanics
- Material properties
- Materials engineering
- Microbes
- Organisms
- Pollution
- Soil cement
- Soil liquefaction
- Soil mechanics
- Soil pollution
- Soil properties
- Soil treatment
- Structural design
Authors
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