Effect of Net Stress on Hydraulic Conductivity of Unsaturated Soils

Mirzaii, Ali; Yasrobi, S. Shahaboddin

doi:10.1007/s11242-012-0058-1

Cited by 10 publications

(2 citation statements)

References 15 publications

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“…e hydraulic conductivity of samples was consequently measured within a steady state flow of water in the flow head of 30 kPa. Using a similar approach to Pavlakis [20] and Mirzaii & Yasrobi [3], the average matric suction of specimens remained unchanged during the infiltration of water.…”

Section: Determination Of Water Permeability Coefficientmentioning

confidence: 99%

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Experimental Investigation of Unsaturated Silt-Sand Soil Permeability

Nazari

Hassanlourad

Chavoshi

et al. 2018

Advances in Civil Engineering

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The permeability of unsaturated silt-sand soil is important in many geotechnical and geoenvironmental challenges. Therefore, an appropriate method to evaluate silt-sand soil permeability is important, particularly in Iran where it received little consideration. In this in vitro research, different amounts of fine silt were evaluated on behavior of an unsaturated silt-sand soil with different grain size distribution using a new modified triaxial apparatus. Permeability was measured against matric suction and volumetric water content, and the results are compared against experimental models. The results indicated that the behavior of unsaturated sandy soil permeability could be determined as a function of matric suction, soil void size, and percentage of fine aggregate. Furthermore, the results appeared to imply that an increase of fine contents reduced the permeability, specifically at higher values of suction. This trend for the reduction of soil permeability was related to the increase in the amount of fine contents.

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Section: Determination Of Water Permeability Coefficientmentioning

confidence: 99%

“…Studies have shown that water only flows through soil gaps that have been continuously filled with water. So, permeability of unsaturated soil is related to two variables, special vertical stress and matric suction, that control the water content in unsaturated soil [3]. e matric suction has a significant influence on soil water content.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Unsaturated Silt-Sand Soil Permeability

Nazari

Hassanlourad

Chavoshi

et al. 2018

Advances in Civil Engineering

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A Computational Intelligence-Based Genetic Programming Approach for the Simulation of Soil Water Retention Curves

Garg

Tai

et al. 2014

Transp Porous Med

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Soil water retention curves are a key constitutive law used to describe the physical behavior of an unsaturated soil. Various computational modeling techniques, that formulate retention curve models, are mostly based on existing soil databases, which rarely consider any effect of stress on the soil water retention. Such effects are crucial in the case of swelling soils. This study illustrates and explores the ability of computational intelligence-based genetic programming to formulate the mathematical relationship between the water content, in terms of degree of saturation, and two input variables, i.e., net stress and suction for three different soils (sand-kaolin mixture, Gaduk Silt and Firouzkouh clay). The predictions obtained from the proposed models are in good agreement with the experimental data. The parametric and sensitivity analysis conducted validates the robustness of our proposed model by unveiling important parameters and hidden non-linear relationships

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Variations in hydraulic properties of collapsible loess exposed to wetting and shearing

Wang

Zhang

et al. 2021

Acta Geotech.

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Effect of Net Stress on Hydraulic Conductivity of Unsaturated Soils

Cited by 10 publications

References 15 publications

Experimental Investigation of Unsaturated Silt-Sand Soil Permeability

Experimental Investigation of Unsaturated Silt-Sand Soil Permeability

A Computational Intelligence-Based Genetic Programming Approach for the Simulation of Soil Water Retention Curves

Variations in hydraulic properties of collapsible loess exposed to wetting and shearing

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