ABSTRACT
Reclamation of abandoned ash disposal sites in earthquake-prone areas is challenging as deposited pond ash is highly susceptible to liquefaction. Particle size var-iation due to the deposition process of ash slurry in the ash disposal site may result in varying liquefaction resistance of pond ash throughout the disposal site. The present study is focused on the evaluation of the in-situ liquefaction resistance of pond ash using the dynamic cone penetration tests (DCPT). DCPT tests were performed at seven different locations of the ash disposal site of Gandhinagar Thermal Power Plant, spread over an area of 0.9 km2. Data from DCPT tests was used to evaluate the liquefaction resistance of pond ash with available correlations in previous literature. This experimental research exhibited a significant variation in the liquefaction resistance (0.05-0.15) of pond ash at different locations of disposal site (vertically and horizontally) for bottom ash content varying from 7% to 77%.
