Sökning: "hydraulic conductivity"

Visar resultat 1 - 5 av 43 avhandlingar innehållade orden hydraulic conductivity.

  1. 1. Hydraulic Conductivity of Saturated Sand-Bentonite mixtures

    Detta är en avhandling från Chalmers University of Technology

    Författare :Malin Sundsten; Chalmers tekniska högskola.; Chalmers University of Technology.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Geovetenskap; Earth sciences; hydraulic conductivity; dry density; bentonite; foundry green sand; quarry sand; laboratory tests; field tests; landfill barrier; design;

    Sammanfattning : The implementation of the EC directive concerning landfill liners and covers sets stricter technical and environmental requirements for landfill barriers. It is therefore essential to identify suitable materials that fulfil these requirements. LÄS MER

  2. 2. Hydraulic conductivity relations in soil and fractured rock : fluid component and phase interaction effects

    Detta är en avhandling från Institutionen för anläggning och miljö

    Författare :Jerker Jarsjö; KTH.; [1998]
    Nyckelord :;

    Sammanfattning : The hydraulic conductivity of soil and fractured rockdetermines the rate at which fluids and dissolved chemicals flowthrough the subsurface, for given conditions at the boundary.Hence, the estimation of relevant parameters for quantificationof hydraulic conductivity relations constitutes a critical basisfor accurate model predictions. LÄS MER

  3. 3. Stabilization-solidification of high water content dredged sediment Strength, compressibility and durability evaluations

    Detta är en avhandling från Luleå tekniska universitet

    Författare :Gregory Makusa; Luleå tekniska universitet.; [2015]
    Nyckelord :dredged sediments; stabilization-solidification; unconfined compressive strength; hydraulic conductivity; durability; freeze-thaw cycles; thaw consolidation; thaw weakening; Cone penetration test; shear strength; Geosynthetic clay liners; Silty Till; cement; Fly ash; granulated blast furnace slag; compressibility; settlement; healing potential; cation exchange; stabilization-solidification; dredged sediments; unconfined compressive strength; hydraulic conductivity; durability; Freeze–Thaw cycling; thaw consolidation; thaw weakening; Cone penetration test; shear strength; Geosynthetic clay liners; Silty Till; cement; Fly ash; slag; settlement; compressibility; cation exchange; Civil engineering and architecture - Geoengineering and mining engineering; Materials science - Construction materials; Samhällsbyggnadsteknik och arkitektur - Geoteknik och gruvteknik; Teknisk materialvetenskap - Konstruktionsmaterial; Geoteknik; Soil Mechanics;

    Sammanfattning : Dredging activities at ports and harbors are inevitable for safe navigation of ships and vessels. The outcomes of dredging are huge volumes of dredged materials, which can range from very fine and contaminated sediments to sands and gravels. The coarse sands and gravels can be directly used in civil engineering applications. LÄS MER

  4. 4. Transport Coefficients during Drying of Solids containing Multicomponent Mixtures

    Detta är en avhandling från Stockholm : KTH

    Författare :Rafael Gamero; KTH.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; capillary; conduction; convection; diffusion; evaporation; heat transfer; hydraulic conductivity; liquid film; liquid transport; mass transfer; Maxwell-Stefan diffusion coefficients; molar fluxes; phase equilibrium; temperature gradient; ternary mixture; thermodynamic factors; TECHNOLOGY Chemical engineering; TEKNIKVETENSKAP Kemiteknik;

    Sammanfattning : This study investigated the transport coefficients involved in mass and heat transfer during the drying of a porous solid partially saturated with multicomponent mixtures.  It included the coefficients governing liquid transport through the solid, the matrix of multicomponent diffusion coefficients in the liquid phase, and the effective thermal conductivity. LÄS MER

  5. 5. Impact of hydropower regulation on river water geochemistry and hyporheic exchange

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Dmytro Siergieiev; Luleå tekniska universitet.; [2013]
    Nyckelord :regulated river; hyporheic zone; hydraulic conductivity; clogging layer; Earth sciences - Atmosphere and hydrosphere sciences; Geovetenskap - Atmosfärs- och hydrosfärsvetenskap; Applied Geology; Tillämpad geologi;

    Sammanfattning : Hydropower regulation of rivers exhibits a threat to the riverine ecosystems. Fragmentation of flow, landscape disturbances, and water retention are key features of regulated catchments, resulting in reduced floods and geochemical tr¬ansport, non-natural water level fluctuations, and thus disturbed exchange between the river and the aquifer. LÄS MER