Chemical Stabilization of Clayey Soil Using Blend of Calcium Carbide Residue and Ground Granulated Blast Furnace Slag

This study investigated the use of two kinds of industrial wastes Ground Granulated Blast Furnace Slag (GGBS) and Calcium Carbide Residue (CCR) in the stability of soil. These industrial wastes are generally dumped or thrown, which produce detrimental effect on the environment. The use of these wastes as soil stabilization improves the properties of soil which helps in various purposes such as designing of pavements, embankments, etc. and save the environment from the ill impact. The soil can be treated and stabilized well at a relatively low cost by using these additives. From the experimental results, it has been observed that various properties of soil added with these stabilizers at certain percentage show remarkable positive changes as compared to the natural soil obtained. The permeability of the soil has reduced, which states that it can be used for the impervious core in Embankments. In this research, GGBS and CCR were employed in stabilizing soils, GGBS was fixed at 20% respectively using index properties tests and then CCR was varied ( i.e. 0.5%, 1.0% and 1.5%). Standard proctor test results showed general decrease in MDD values and increase in OMC values which may be obvious as the specific gravity of the additives is less than that of the soil. The value of Unconfined Compressive Strength has increased enabling increase in the bearing capacity of soil. The increased value of California Bearing Ratio in both soaked and unsoaked conditions indicates that the designing of flexible pavements becomes economical by reducing the thickness of base and sub-base courses