Influence of Curing Temperature on Shear Strength and Compressibility of Swelling Soil Stabilized with Hydrated Lime

Abstract

The exposed cohesive soils to temperature can face physical and mechanical characteristics changes considerably. Therefore, understanding the environmental events influences on the soil geotechnical properties is essential, which is significant in the rainy and cold places such as in Sulaimani city, north of Iraq. For that reason, and due to the common role of lime on cohesive soil stabilization, application of temperature changes were performed on cohesive soil stabilized with hydrated lime. This experimental study examines the temperature changes impacts on the durability of stabilized cohesive soil using hydrated-lime. Two different temperatures; 10 Co, and 50 Co were applied on the stabilized soil with 0%, 5%, 10% and 15% hydrated-lime added as a replacement on the soils dry mass. The study focused on some geotechnical properties; consistency, unconfined compression, and compressibility behaviours. Under the applied circumstances, combination of hydrated-lime with curing temperature, a decrease was noticed in the magnitudes of liquid limit and plasticity index, while plastic limit generally increased within hydrated-lime percent increase. The study yielded on an appreciable improvement of the cohesive soil’s strength and compressibility properties with time progress, especially after stabilization process is achieved.