Geohydraulic properties of compacted clays with special consideration of the unsaturated state



The use of soil contaminated with pollutants in earthworks requires investigations into the infiltration and possible discharge of pollutants from the structures. The hydraulic properties of the soil in the unsaturated state are decisive for this:

  • Suction Stress-Water Content Relationship (SWRC)
  • unsaturated hydraulic conductivity


  • Estimation of the suction tension-water content ratio (SWRC) by means of easily determinable parameters
  • Investigation of the influence of the paving water content on the water balance of a test bed

Laboratory experiments

  • mercury porosimetry
  • Oedometer cell controlled by suction tension
  • permeability tests

Derivation of van Genuchten parameters and large-scale field tests