Transport in Porous Media

, Volume 95, Issue 3, pp 497–505 | Cite as

Effect of Net Stress on Hydraulic Conductivity of Unsaturated Soils

  • Ali MirzaiiEmail author
  • Seyed Shahaboddin Yasrobi


This note presents results of a laboratory test program that examines the influence of pore volumes on soil water coefficient of permeability in different saturation conditions. Comparing the results, it is observed that the dependency of water coefficient of permeability to void spaces in unsaturated soils follow a different trend than associated in saturated state. The shift of the soil–water characteristic curve within the change of pore spaces is utilized to qualify the opposite detected response of unsaturated water permeability to the change of pore spaces.


Unsaturated soils Water coefficient of permeability Pore spaces Soil–water characteristic curve 


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© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Faculty of Civil and Environmental EngineeringTarbiat Modares UniversityTehranIran

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