Liquefaction Evaluation of Microbial Induced Calcium Carbonate Precipitation (MICP) Treated Sands; A Strain Energy Approach

The present research investigates liquefaction behavior of microbial induced calcium carbonate precipitation (MICP)-treated Nevada sand with different silt content, for the first time in terms of dissipated strain energy. The obtained results indicated that normalized liquefaction capacity energy WL/σcι for MICP-treated soil was dependent on the CSR and NL. Moreover, acceptable relationships between the excess pore water pressure ratio and dissipated energy were found for both MICP-treated and untreated samples. Furthermore, Bender element tests results proved that shear wave velocities had a stronger relationship with WL/σcι rather than CSR, while, MICP treatment changed the relationship between Vs and liquefaction resistance.