Development and evaluation of induced partial saturation (IPS), delivery method and its implementation in large laboratory specimens and in the field

• Online Access: http://hdl.handle.net/2047/D20200382

Liquefaction of saturated loose sands during an earthquake is associated with the build-up of excess pore water pressure, leading to loss of shearing strength of the sand. Current liquefaction mitigation techniques used in practice are expensive, and cannot be implemented on sites with existing structures. An innovative, practical, and cost effective liquefaction mitigation technique called "Induced Partial Saturation" (IPS) was proposed by Yegian et al., (2007). The proposed technique involves injection of a chemical solution that generates minute gas bubbles within the pores of initially fully-saturated sand, thus increasing the compressibility of the pore water leading to reduction or even elimination of liquefaction potential.