EXPERIMENTAL STUDIES ON THE STRENGTH BEHAVIOUR OF CLAYEY SOIL TREATED WITH COAL ASH, GROUNDNUT SHELL ASH & LIME

The clayey soil is collected from Ponnepadam11.219677 N, 75.878844 E, a marshy land area. The collected soil is stabilized using coal ash, groundnut shell ash and lime in different combinations. The collected soil is stabilized using coal ash alone, a combination of coal ash and groundnut shell ash & a combination of coal ash, groundnut shell ash and lime. The effect of these admixtures on the clayey soil was investigated with respect to Modified proctor test, California bearing ratio (CBR) and unconfined compression test The results shows increase in Optimum moisture content, UCC value and CBR value. There is also an increase in maximum dry density (MDD). It was also found that there was a tremendous increase in CBR value as well as in UCC value, when it is stabilized with a combination of coal ash , groundnut shell ash and lime. This indicates a potential of using coal ash, groundnut shell ash and lime as a combination to stabilize clayey soil