Wetting and Drying Cycles Influences on Geotechnical Properties of Lime-Stabilized Clayey Soil

Abstract

AbstractThis paper observed the behavior of cohesive (CL) soil behavior that exposed to three wetting and drying (W-D) cycles before and after treatment using hydrated lime (HL). The experimental program focuses on the evaluated the consistency, shear, compressibility, and unconfined compression parameters. This study investigated added the percent 5%, 10% and 15% of HL content of the treated natural soil samples. All the samples were exposed to 0, 1, 2, and 3 W-D cycles. The achieved results show that there is a notable role for W-D cycles to modify some of the geotechnical properties of the CL soil. The soil plastic limit (PL) value was observed to be increased with increasing HL content after exposure to W-D cycles. HL was discovered to be decreasing W-D influences on the liquid limit (LL), plasticity index (PI), compression index (Cc), and swelling index (Cr). The other geotechnical parameters such as cohesion (C), angle of internal friction (Ø), and unconfined compressive strength (UCS) slightly decrease were observed due to HL content increase after exposure to W-D cycles. Results showed that HL successfully decreases the W-D cycles impacts on consistency, shear, and compressibility parameters of CL soil.KeywordsWetting-dryingCyclesHydrated limeGeotechnical properties