Gupta, S.S.Bisht, Ankit2019-01-052019-01-052018-07http://krishikosh.egranth.ac.in/handle/1/5810089058The increasing demand of cement results in huge collection of cement kiln dust (CKD) as a by-product from cement plants. In the similar manner enormous amount of rice husk ash (RHA) as a waste is produced from rice mill industries. These wastes contributes environmental pollution. The safe disposal of these wastes and high cost of traditional stabilizers like cement and lime led to an extensive investigation to use these wastes for stabilization of soil. This study is an attempt to incorporate the rice husk ash and cement kiln dust for the modification of local soil and subsequently to find out the optimum mix that can effectively be used to modify the local soil. The soil was procured from Sitarganj (Uttarakhand), RHA was procured from Shyam Rice mill Rudrapur Uttarakhand, CKD was procured from Jaypee Rewa Plant, Jaypee Nagar (Madhya Pradesh). The entire study was conducted in three phases. In the first phase the geotechnical properties of local soil were determined. In the second phase rice husk ash was added to the local soil and geotechnical properties were determined. In the last phase cement kiln dust was added to the soil-RHA samples and geotechnical properties were determined. After conducting standard proctor, California Bearing Ratio, and unconfined compressive strength tests, results showed that 12% CKD and 10% RHA was the optimum mix for the modification of local soil. This mix was concluded appropriate for strengthening the subgrade soil.ennullThesis