Stress-Strain Behaviour of Compacted Pond Ash Reinforced with Stone Column

Abstract

Ash pond deposits are characterized by its high compressibility and low bearing capacity which is unappropriated for the construction of engineering structures over it. There are several techniques to improve the bearing capacity of ash deposits. Stone column is one of the effective techniques employed to increase the bearing capacity for construction of engineering structures over soft soil deposits. Stone columns are extensively used to improve the bearing capacity of poor ground, time rate of settlements, stiffness, reduce the settlement of structure, and liquefaction potential of soft ground. This paper reports the load settlement behaviour of compacted pond ash beds reinforced with stone columns. Both end bearing and floating stone columns of different length ratios and area ratios were introduced in compacted pond ash beds having different densities. The load-settlement behaviour of footings supported on different configurations of stone columns was studied.