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This work aims to analyze the soil-water characteristic curves and hydraulic conductivity of loess materials in different conditions.

January 18, 2026Applied SciencesOpen Access

Study on the Soil-Water Characteristic Curve and Hydraulic Conductivity Prediction of Unsaturated Undisturbed and Compacted Loess

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Research investigates hydraulic properties of undisturbed and remolded loess, suggesting their importance for engineering and agriculture.

This work aims to analyze the soil-water characteristic curves and hydraulic conductivity of loess materials in different conditions.
Investigated soil-water characteristic curves of undisturbed and remolded loess using tensiometer and psychrometer methods
Fitted SWCC using Van Genuchten and Fredlund models
Calculated permeability with Childs and Collis-George, Van Genuchten, and Fredlund models
SWCC exhibited three-stage characteristics: boundary effect zone, transition zone, and residual zone
Corrected Fredlund and Xing model provided optimal SWCC calculations
Undisturbed loess showed low water retention at low suction due to large pore structure

Li et al. (2026) studied this question.

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Research investigates hydraulic properties of undisturbed and remolded loess, suggesting their importance for engineering and agriculture.