Evaluation and Analysis of Soil Stabilized with Cement Kiln Dust and Ceramic Waste Powder

An Expansive soil was collected locally and then it was stabilized with 3,6,9 and 12% CKD which was admixed with 5,15,25 and 35% ceramic waste Powder(CWP) each. Index properties tests were conducted on the untreated Expansive soil while compaction tests, California Bearing Ratio test and unconfined compressive strength tests were carried out on the untreated expansive soil admixed with varied composition of CKD and CWP. Results from index properties showed that the soil was classified as soil of high plasticity based on unified soil classification system. The maximum dry densities (MDD) were observed to increase with increase in CKD and CWP while the optimum moisture content (OMC) increases in the same order. The unconfined compressive strength (UCS) increased with increase in CWP. The CBR value also increased with increase in CWP. A maximum of 274kPa was recorded at 9% CKD and 35% CWP after 28 days of curing. This maximum value satisfied the requirement for a stabilized material to be used as base course material for highly trafficked roads. Significant increase in UCS was also observed with increase in curing days which signifies the existence of Pozzolanic reaction in the mixture. 35% CWP can therefore be used for effective stabilization of expansive soil.