ENGINEERING BEHAVIOR OF LIME-STABILIZED EXPANSIVE SOIL UNDER VARIED THERMAL CURING REGIMES

The exposed cohesive soils to temperature can face considerable physical and mechanical characteristic changes. Therefore, understanding the environmental events' influence on the soil geotechnical properties is essential, which is significant in rainy and cold places such as Sulaimani City, northern Iraq. This experimental study examines the temperature changes (10o C, and 50o C) impact on the durability of stabilized cohesive soil using 0%, 5%, 10%, and 15% hydrated lime added as a replacement for the soil dry mass. Consistency, unconfined compression, and compressibility characteristics were evaluated. Under the applied circumstances, a decrease was noticed in the magnitudes of liquid limit and plasticity index, while the plastic limit generally increased within the hydrated-lime percent increase. The study yielded an appreciable improvement of the cohesive soil’s strength and compressibility properties with time progress, especially after the stabilization process is achieved.