Published Paper Details:

Clayey soils, characterized by high plasticity and low shear strength, pose significant challenges in geotechnical engineering applications. This study investigates the effectiveness of Cement Kiln Dust (CKD), an industrial by-product with high calcium oxide content, as a stabilizing agent for clayey soils. Laboratory experiments focused solely on CKD-treated samples at varying dosages (3%, 6%, 9%, 12%, and 15%) to evaluate improvements in engineering properties. Standard Proctor Compaction tests were conducted to determine changes in Maximum Dry Density (MDD) and Optimum Moisture Content (OMC), while Unconfined Compressive Strength (UCS) and Triaxial shear tests were used to assess strength parameters, including cohesion and internal friction angle, over curing periods of 0, 7, and 28 days. Results demonstrated that increasing CKD content led to notable improvements in MDD and reductions in OMC, indicating better compaction characteristics. UCS and Triaxial test outcomes revealed enhanced soil strength and stability with increased CKD content, particularly at extended curing durations, due to pozzolanic reactions and cementitious bonding. The findings support the viability of CKD as a cost-effective and sustainable stabilizer for improving the structural performance of clayey soils.