Effects of Biocementation Treatment on Mitigating Liquefaction-Induced Foundation Settlements Using 1g Shake Table Test
Effects of Biocementation Treatment on Mitigating Liquefaction-Induced Foundation Settlements Using 1g Shake Table Test
This research investigates the use of Microbially Induced Calcite Precipitation (MICP) to improve the engineering characteristics of granular soils through calcium carbonate deposition. The MICP was specifically used to reduce shallow foundation settlements caused by liquefaction during seismic activity. To accomplish these objectives, scaled model shake table tests are conducted, which were designed based on a large-scale shake table experiment carried out by our research team in 2018, and comprised three distinct soil layers with different relative densities. A shallow foundation was positioned on the upper crust layer, and the soil beneath the foundation was treated to achieve a shear wave velocity of 250 m/s. The experimental results demonstrated that MICP significantly decreased the time required for the dissipation of excess pore water pressure (PWP), as well as reduced foundation settlement and tilting. The reductions observed included a 50% decrease in the dissipation time of excess PWP, a 64% decrease in foundation settlement, and a 95% decrease in foundation tilting.
Md Kausar Alam; Ramin Motamed; Ben Ma
2025 International Conference on Bio-mediated and Bio-inspired Geotechnics (ICBBG2025)
General session: Bio-mediated methods for hazard mitigation
https://doi.org/10.53243/ICBBG2025-61
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