Investigation into the shear strength of a weakly expansive soil over a wide suction range

Niu, Geng; Sun, De’an; Kong, Liang; Shao, Longtan; Wang, Hao; Wang, Zhongzheng

doi:10.1007/s11440-024-02246-7

Acta Geotech.

2024

DOI: 10.1007/s11440-024-02246-7

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Investigation into the shear strength of a weakly expansive soil over a wide suction range

Geng Niu,

De’an Sun,

Liang Kong

et al.

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Cited by 14 publications

References 47 publications

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Shear strength equation of soils in a wide suction range under various initial void ratios

Song,

Zhang

2024

Vadose Zone Journal

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Shear strength equation is a basic theory for solving many geotechnical engineering problems. Although the shear strength equation has received widespread attention, shear strength of clay under wide suction range and different initial void ratio conditions cannot be well predicted. This study aims to establish a new strength equation applicable to soils within a wide suction range. Considering the capillary and adsorptive parts of soil–water interactions, a cohesion expression related to the degree of adsorbed water saturation Sra and the effective stress related to the degree of capillary water saturation Src are proposed. After that, based on the Mohr–Coulomb theory, a shear strength equation of unsaturated soils in a wide range of suction under various is proposed. Five parameters are included in the equation. It is easy to calibrate them through shear tests on saturated and the fully dried soils. It is verified that not only the sandy clay till and clayed silt but also the expansive soil's shear strength in wide ranges of suction under various can be well predicted.

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Shear strength equation of soils in a wide suction range under various initial void ratios

Song,

Zhang

2024

Vadose Zone Journal

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Experimental investigation and modelling of the tensile strength and soil water characteristics of a low-plastic clay

Zhang,

Gao,

Niu

et al. 2024

Bull Eng Geol Environ

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Effect of particle size distribution on the thermal conductivity of crushed GMZ bentonite pellet mixtures

Zhou,

Sun,

Zhang

et al. 2024

Acta Geotech.

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Investigation into the shear strength of a weakly expansive soil over a wide suction range

Cited by 14 publications

References 47 publications

Shear strength equation of soils in a wide suction range under various initial void ratios

Shear strength equation of soils in a wide suction range under various initial void ratios

Experimental investigation and modelling of the tensile strength and soil water characteristics of a low-plastic clay

Effect of particle size distribution on the thermal conductivity of crushed GMZ bentonite pellet mixtures

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