Study on the macro-microscopic mechanical properties of saline soil stabilized by ionic agent and inorganic materials in cold regions

Yan, Yihui; Chang, Dan; Liu, Jiankun; Nan, Jiyun; Liu, Xiaoqiang; Feng, Lizhen

doi:10.1016/j.conbuildmat.2024.137650

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Cited by 2 publications

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Model test study on the rainfall erosion mechanisms and reclamation potential of open-pit coal mine dump soil improved by fly ash and polyacrylamide

Li,

Wang,

Zhao

et al. 2025

Engineering Geology

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Model test study on the rainfall erosion mechanisms and reclamation potential of open-pit coal mine dump soil improved by fly ash and polyacrylamide

Li,

Wang,

Zhao

et al. 2025

Engineering Geology

View full text Add to dashboard Cite

Investigating Peak Strength of Gap-Graded Soils Through Discrete Element Method: Mechanisms and Prediction

Xu,

Hu,

Sun

et al. 2024

Preprint

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Gap-graded soils, commonly used in geotechnical and hydraulic engineering applications, exhibit diverse strength characteristics influenced by particle size distribution. To understand the mechanisms governing the strength of gap-graded soils and to develop a predictive formula for strength, this study utilizes the discrete element method to investigate the peak strength of gap-graded soil samples with a wide range of fine particle contents (FC) and particle size ratios (SR). The results reveal a complex and coupled effect of FC and SR on peak strength, with distinct trends in different FC ranges. At the particle scale, the arrangement of particles in initially isotropic gap-graded soils changes under external loading, leading to an increase in branch anisotropy value. The magnitude of this increase is influenced by both the particle size distribution and fine content. A lower value of peak branch anisotropy indicates a more uniform normal force distribution among contact types (coarse-coarse, fine-fine, and fine-coarse force type), resulting in a higher peak strength of the soil. Microscopic analysis confirms a negative correlation between strength and both branch anisotropy and standard deviation of normal contact force proportions at peak state. Furthermore, a peak strength prediction formula incorporating SR and FC is proposed, offering practical guidelines for engineering design involving gap-graded soils.

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Study on the macro-microscopic mechanical properties of saline soil stabilized by ionic agent and inorganic materials in cold regions

Cited by 2 publications

References 42 publications

Model test study on the rainfall erosion mechanisms and reclamation potential of open-pit coal mine dump soil improved by fly ash and polyacrylamide

Model test study on the rainfall erosion mechanisms and reclamation potential of open-pit coal mine dump soil improved by fly ash and polyacrylamide

Investigating Peak Strength of Gap-Graded Soils Through Discrete Element Method: Mechanisms and Prediction

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