Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Permeability Reduction Due to Microbial Induced Calcite Precipitation in Sand
Fine sands have shown that they are susceptible to liquefaction. There are many soil improvement methods that are effective in improving the shear strength and stiffness of fine sand but they often have limitations due to the soil characteristics, such as permeability. Microbial induced calcite precipitation (MICP) has been shown to be a natural and effective liquefaction mitigation method for clean fine sands. Although this method is effective, there may be limitations in implementing MICP in situ. In this study, the permeability reduction from MICP is investigated to understand its implications for field implementation of MICP treatments. Fine sand specimens have been treated to different cementation levels, estimated using nondestructive shear wave velocity measurements. Permeability of treated samples is measured using a constant head permeameter. Utilizing the permeability results of the treated specimens, numerical simulations of the MICP treatments are evaluated by creating a constant head difference between an injection and extraction well and observing the water velocity changes within the domain.
Permeability Reduction Due to Microbial Induced Calcite Precipitation in Sand
Fine sands have shown that they are susceptible to liquefaction. There are many soil improvement methods that are effective in improving the shear strength and stiffness of fine sand but they often have limitations due to the soil characteristics, such as permeability. Microbial induced calcite precipitation (MICP) has been shown to be a natural and effective liquefaction mitigation method for clean fine sands. Although this method is effective, there may be limitations in implementing MICP in situ. In this study, the permeability reduction from MICP is investigated to understand its implications for field implementation of MICP treatments. Fine sand specimens have been treated to different cementation levels, estimated using nondestructive shear wave velocity measurements. Permeability of treated samples is measured using a constant head permeameter. Utilizing the permeability results of the treated specimens, numerical simulations of the MICP treatments are evaluated by creating a constant head difference between an injection and extraction well and observing the water velocity changes within the domain.
Permeability Reduction Due to Microbial Induced Calcite Precipitation in Sand
Zamani, Atefeh (Autor:in) / Montoya, Brina M. (Autor:in)
Geo-Chicago 2016 ; 2016 ; Chicago, Illinois
Geo-Chicago 2016 ; 94-103
08.08.2016
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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