Lime stabilization of clayey soils in Kota Belud: Insights from Mohr-coulomb failure criterion, stress-strain and pore water pressure analysis

Norfazirah Ziela Rahim and Baba Musta and Habib Musa Mohamad and Adi Susilo (2025) Lime stabilization of clayey soils in Kota Belud: Insights from Mohr-coulomb failure criterion, stress-strain and pore water pressure analysis. Journal of Advanced Research in Applied Mechanics, 141. pp. 8-33. ISSN 2289-7895

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Abstract

This study investigates the improvement of clayey soils from three locations in Kota Belud, Sabah: Kg. Pandasan (KgP), Kg. Mantanau (KgM), and Kg. Kalibungan (KgK), through lime stabilization. These soils, derived from the weathered Wariu Formation, pose geotechnical challenges due to their intermediate to high plasticity, presenting significant geotechnical challenges due to low shear strength and high compressibility. Lime treatment was applied to enhance their engineering properties, focusing on shear strength, stress-strain behavior, and pore water pressure. Consolidated undrained (CU) triaxial tests were performed on untreated and lime-treated samples cured for 7 days at 40 degrees Celsius under effective confining pressures of 25, 50, and 100 kPa. Consolidated undrained triaxial tests showed significant improvements across all parameters. For instance, 6% lime-treated KgP soils achieved a cohesion of 520 kPa and a friction angle of 29.7°, compared to untreated values of 290 kPa and 24.2°. Shear strength also increased significantly, reaching 1802.2 kPa, 1812.9 kPa, and 1938.0 kPa under confining pressures of 25, 50, and 100 kPa, compared to untreated values of 925.3 kPa, 929.8 kPa, and 1024.6 kPa. Similar enhancements were observed in KgM and KgK soils. Lime treatment also reduced pore water pressure, improving stability, and resulting in soils with greater stiffness and reduced plastic deformation. These findings demonstrate that lime stabilization is effective in improving the mechanical behavior, stability, and geotechnical suitability of clayey soils from Kota Belud.

Item Type:	Article
Keyword:	Clayey soils, Wariu formation, Hydrated lime stabilizer, Cohesion, Shear strength, Pore water pressure
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA1-2040 Engineering (General). Civil engineering (General) > TA703-712 Engineering geology. Rock mechanics. Soil mechanics. Underground construction
Department:	FACULTY > Faculty of Science and Natural Resources
Depositing User:	DG MASNIAH AHMAD -
Date Deposited:	29 Jul 2025 12:27
Last Modified:	29 Jul 2025 12:27
URI:	https://eprints.ums.edu.my/id/eprint/44691

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