Abstract
The long-term stability of the construction over soil depends significantly on the strength of the ground. Swelling and shrinkage characteristics of expansive fine-grained soil causes volumetric changes followed by distress and damage to the structures resting on it. One of the most popular and cost-effective methods of improving soil is adding admixtures. Utilization of industrial wastes in soil stabilization is a cost effective and environment friendly solution. In this study, two types of industrial wastes, copper slag and pond ash, are used with the aim of improving the strength and compaction characteristics of subgrade. So, the work is focused on evaluating the compaction and strength characteristics of Kaolin clay (KC) blended with Copper Slag (CS) and Pond Ash (PA). For the compaction characteristics, modified proctor compaction tests were conducted and to study the strength characteristics, Unconfined compressive strength (UCS) and split tensile strength (STS) tests were conducted. In Total, 14 different mix combinations were used in this study. From the test results, it has been observed that blending KC with PA and CS not only improved its compaction characteristics but strength too.
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