Research@Lincoln
    • Login
     
    View Item 
    •   Research@Lincoln Home
    • Theses and Dissertations
    • Doctoral (PhD) Theses
    • View Item
    •   Research@Lincoln Home
    • Theses and Dissertations
    • Doctoral (PhD) Theses
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Soil water movement through swelling soils

    Ekanayake, Jagath C.
    Abstract
    The present work is a contribution to description and understanding of the distribution and movement of water in swelling soils. In order to investigate the moisture distribution in swelling soils a detailed knowledge of volume change properties, flow characteristics and total potential of water in the soil is essential. Therefore, a possible volume change mechanism is first described by dividing the swelling soils into four categories and volume change of a swelling soil is measured under different overburden pressures. The measured and calculated (from volume change data) overburden potential components are used to check the validity of the derivation of a load factor, ∝. Moisture diffusivity in swelling soil under different overburden pressures is measured using Gardner's (1956) outflow method. Behaviour of equilibrium moisture profiles in swelling soils is theoretically explained, solving the differential equation by considering the physical variation of individual soil properties with moisture content and overburden pressure. Using the measured volume change data and moisture potentials under various overburden pressures, the behaviour of possible moisture profiles are described at equilibrium and under steady vertical flows in swelling soils. It is shown that high overburden pressures lead to soil water behaviour quite different from any previously reported.... [Show full abstract]
    Keywords
    soil moisture; soil absorption; soil adsorption; soil water movement; swelling soil; moisture content; equilibrium moisture profiles; unsaturated soils; soil hydrology
    Date
    1990
    Type
    Thesis
    Collections
    • Doctoral (PhD) Theses [1000]
    • Department of Environmental Management [1179]
    Thumbnail
    View/Open
    ekanayake_phd.pdf
    Share this

    on Twitter on Facebook on LinkedIn on Reddit on Tumblr by Email

    Metadata
     Expand record
    This service is maintained by Learning, Teaching and Library
    • Open Access Policy
    • Copyright and Reuse
    • Deposit Guidelines and FAQ
    • Contact Us
     

     

    Browse

    All of Research@LincolnCommunities & CollectionsTitlesAuthorsKeywordsBy Issue DateThis CollectionTitlesAuthorsKeywordsBy Issue Date

    My Account

    LoginRegister

    Statistics

    View Usage Statistics
    This service is maintained by Learning, Teaching and Library
    • Open Access Policy
    • Copyright and Reuse
    • Deposit Guidelines and FAQ
    • Contact Us