Rapid Field Assessment of MICP/MIDP Test Sections

The objective of this field work is to assess the effectiveness of microbially induced carbonate precipitation (MICP) and microbially induced desaturation and precipitation (MIDP) method in terms of mitigating earthquake-induced soil liquefaction. The field work includes: (1) twelve direct-push crossholes seismic tests to determine primary wave velocity (VP) and shear wave velocity (VS) profiles, and (2) one nonlinear shaking test to evaluate the relationships between cyclic shear strain and the generation of excess pore water pressure in soils.