BEHAVIOURAL STUDY OF ORDINARY AND ENCASED FLY ASH COLUMNS

Constructing on soft ground is now a necessity due to the world’s growing population and limited land availability. Several different methods have been utilized to enhance the bearing capacity and control settlements in the ground. This work focuses on the behavior of stone columns with the emphasis on the substitution of the conventional filler materials with fly ash. The analysis carried out through PLAXIS 3D also evaluates the performance of geosynthetic encasement on the behavior of the column. The findings indicate that fly ash fill reduces settlement to a very great extent, and encasement increases it even more when compared to the non-encased columns. Validation of the numerical model against experimental data demonstrated the accuracy of the numerical model.