MOISTURE TRANSFER IN SOILS

FUKTTRANSPORT I JORDARTER

This report gives a brief description of the structural features of inorganic soils, and four different types of bound water: chemically, adsorptively, capillary and osmotically bound water. Based on a review of the current literature in this field the theory of moisture transfer in soils is expressed quantitatively in terms of soil-water content gradient, the soil temperature gradient, isothermal and thermal soil-water diffusivity and hydraulic conductivity. The application of equations of irreversible thermodynamics to the moisture transfer problem is presented. Also described are horizontal diffusion, vertical infiltration, influence of the ground water level, evapotranspiration and steady state flow. Soil-water movement in response to temperature gradients is also dealt with. Laboratory investigations are carried out to measure the moisture transfer coefficients in different soils and in various layers of a model road structure. The last two chapters deal with field investigations and attempt to explain moisture transfer and moisture content by means of ground water table, geologic and climatic factors involved, type of pavement structure, drainage, geometry and various other specific variables. /TRRL/

  • Corporate Authors:

    Norges Tekniske Hogskole

    Institutt for Geoteknikk og Fundamenteringslaere
    7034 Trondheim-NTH,   Norway 
  • Authors:
    • Angen, E
  • Publication Date: 1978-2

Language

  • Norwegian

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 324 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00184286
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Meddelelse No. 18 Thesis
  • Files: ITRD, TRIS
  • Created Date: Jan 13 1979 12:00AM