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<p>Lime-stabilized soil is widely used in slopes, foundations, and roadway construction, necessitating an evaluation of its strength characteristics under varying temperature conditions. This study investigates the tensile, compressive, and shear strengths of natural and lime-treated marine soils from a northern Canadian community. Experimental tests include the double punch tensile strength test (DPT), unconfined compressive strength test (UCS), and temperature-controlled consolidated undrained triaxial test. The triaxial tests were conducted at varied loading rates and temperatures ranging from 25 to −13.5&#xa0;°C, while tests of DPT and UCS were conducted at room temperature. Results indicate that lime treatment alters the soil's ductile behavior and strain hardening response into brittle behavior. A nonlinear relationship between strength parameters and temperature in the studied soil is obtained based on the temperature-controlled triaxial test results. Finite element modeling, validated against laboratory data, effectively captures strain hardening and strain softening behaviors. The FEM analysis with the hyperbolic Drucker–Prager model accurately represents frozen soil deformation under compressive, tensile, and shear loading, while the damage XFEM model successfully simulates damage initiation and crack propagation in uniaxial compressive and indirect tensile tests. These models reliably replicate failure patterns, enhancing the predictive capability for soil behavior in cold environments.</p>

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Experimental and numerical investigation of the mechanical behavior of lime-treated silty clay under various loading and temperature conditions

  • 期刊论文

  • 发表日期：

    2026年2月18日

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  • Sohail Akhtar,
  • Biao Li

摘要

Lime-stabilized soil is widely used in slopes, foundations, and roadway construction, necessitating an evaluation of its strength characteristics under varying temperature conditions. This study investigates the tensile, compressive, and shear strengths of natural and lime-treated marine soils from a northern Canadian community. Experimental tests include the double punch tensile strength test (DPT), unconfined compressive strength test (UCS), and temperature-controlled consolidated undrained triaxial test. The triaxial tests were conducted at varied loading rates and temperatures ranging from 25 to −13.5 °C, while tests of DPT and UCS were conducted at room temperature. Results indicate that lime treatment alters the soil's ductile behavior and strain hardening response into brittle behavior. A nonlinear relationship between strength parameters and temperature in the studied soil is obtained based on the temperature-controlled triaxial test results. Finite element modeling, validated against laboratory data, effectively captures strain hardening and strain softening behaviors. The FEM analysis with the hyperbolic Drucker–Prager model accurately represents frozen soil deformation under compressive, tensile, and shear loading, while the damage XFEM model successfully simulates damage initiation and crack propagation in uniaxial compressive and indirect tensile tests. These models reliably replicate failure patterns, enhancing the predictive capability for soil behavior in cold environments.