COMPARATIVE STUDY ON STABILIZATION OF BLACK COTTON SOIL TREATED WITH POND ASH AND SODIUM LIGNOSULPHONATE

Jagadish.S.Haranatti, Shashidhara.R.Hosamani

Abstract: The objective of this work is to use industrial wastes in place of natural soil in the construction of road and highway after increasing its strength, stability and durability by the method of stabilization. The admixture such as pond ash and chemical agent sodium lignosulphonate are used for stabilization. The present study is to investigate the properties such as maximum dry density, optimum moisture content and consistency limits of black cotton soil stabilized with admixture and chemical by varying percentages. There was decrement in the values of Liquid limit and plasticity index upon the addition of pond ash and sodium lignosulphonate. UCS values of parent soil was found to be 24kPa but when pond ash was added it was found to be 120kPa at 24% whereas for sodium lignosulphonate was 235kPa at 12% dosage for 14 days curing. Parametric study was done on combination of pond ash and sodium lignosulphonate. Optimum24% pond ash was mixed with sodium lignosulphonate in the range 3% to 12%.The combinations of these two improved engineering properties as compared to parent soil. It was found that pond ash mixed with sodium lignosulphonate-stabilized black cotton soil showed improvement in strength 355kPa after 14 days curing.

Keywords: Black Cotton Soil, Pond Ash, Sodium Lignosulphonate

DOI: https://doi.org/10.15623/ijret.2018.0705012