TY - JOUR
T1 - Unsaturated fluid flow through granular soils treated with microbial induced desaturation and precipitation
AU - Young, Elizabeth G.Stallings
AU - Zapata, Claudia E.
AU - Van Paassen, Leon
N1 - Publisher Copyright:
© The Authors, published by EDP Sciences 2020.
PY - 2020/10/16
Y1 - 2020/10/16
N2 - The use of microorganisms to induce desaturation of granular soils via denitrification results in nitrogen and carbon dioxide gas generation, which in turn lowers the degree of saturation of the soil matrix. Given sufficient substrates, the stimulated bacteria will produce enough gas to develop a continuous gas phase. Introducing gas into the soil to reduce the degree of saturation is shown to increase the soil resistance to dynamic loading and helps to mitigate liquefaction. The impact of desaturation on liquefaction hazard mitigation has comparative value to the calcite precipitation phase of the process. Meso-scale tests have been performed on a relatively thin tank of soil to simulate planar flow through a granular soil treated with MIDP.
AB - The use of microorganisms to induce desaturation of granular soils via denitrification results in nitrogen and carbon dioxide gas generation, which in turn lowers the degree of saturation of the soil matrix. Given sufficient substrates, the stimulated bacteria will produce enough gas to develop a continuous gas phase. Introducing gas into the soil to reduce the degree of saturation is shown to increase the soil resistance to dynamic loading and helps to mitigate liquefaction. The impact of desaturation on liquefaction hazard mitigation has comparative value to the calcite precipitation phase of the process. Meso-scale tests have been performed on a relatively thin tank of soil to simulate planar flow through a granular soil treated with MIDP.
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U2 - 10.1051/e3sconf/202019505003
DO - 10.1051/e3sconf/202019505003
M3 - Conference article
AN - SCOPUS:85097165673
SN - 2555-0403
VL - 195
JO - E3S Web of Conferences
JF - E3S Web of Conferences
M1 - 05003
T2 - 4th European Conference on Unsaturated Soils, E-UNSAT 2020
Y2 - 19 October 2020 through 21 October 2020
ER -