IMPACT OF RICE HUSK WASTE IN SOIL STABILIZATION

Abstract

Many research works have been carried out all over the world in the direction of utilizing different Agricultural waste product in the stabilization technique of soil. From the literature available it is found that little research has been done the effect of agricultural waste on tropical soil. This project work therefore presents the result of a laboratory study undertaken to investigate tropical soil and the effect of Rice Husk Ash (RHA). The laboratory tests carried out on the natural and stabilized soils include Natural moisture content, Specific gravity, particle size analysis, Atterberg limits, compaction, California Bearing Ratio (CBR) and Unconfirmed Compressive Strength (UCS). The soil was mixed separately for conducting different tests under the same conditions with RHA from 0 to 15% at an increment of 3% by dry weight of the soil. Mixes were prepared and the above mention tests were conducted on the sample according to the standards of American Society for Testing and Materials (ASTM). From the conclusions of the test results, it was found that the liquid limit of the soil decreased from 52 % to 27% when RHA and cement was added from 0 to 15% and from the MDD it increased from 1.74mg/m³ to 2.78mg/m³and the UCS value increased from 2.88kg/cm² to 7.83kg/cm². Based on the result it can be concluded that RHA gave satisfactory results in the stabilization of the soil.