STP746: Evaluating the Saturated and Unsaturated Hydraulic Conductivity of Soils

    Elzeftawy, A
    Assistant soil physicist and geologistassociate research professor, Illinois State Geological SurveyWater Resources Center, Desert Research Institute, University of Nevada System, ChampaignLas Vegas, Ill.Nev.

    Cartwright, K
    Assistant soil physicist and geologistassociate research professor, Illinois State Geological SurveyWater Resources Center, Desert Research Institute, University of Nevada System, ChampaignLas Vegas, Ill.Nev.

    Pages: 14    Published: Jan 1981


    Abstract

    A method of calculating the saturated and unsaturated hydraulic conductivities of soils and similar porous materials based on the pore size distribution was shown to predict the experimentally measured values adequately. For coarse-textured soil materials or materials with a relatively narrow range of pore size, only one matching factor is required to calculate the hydraulic conductivity-water content relation accurately enough for many purposes; however, for fine-textured soil materials with a wide range of pore size distribution, two or more matching factors at a water content in the 0.3 to 0.4 bar range may be needed to obtain a useful evaluation for the unsaturated hydraulic conductivity.

    Keywords:

    unsaturated hydraulic conductivity, soil water, computer methods, permeability, groundwater


    Paper ID: STP28323S

    Committee/Subcommittee: D18.04

    DOI: 10.1520/STP28323S


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