(1) Laboratoire Environnement, Géomécanique & Ouvrages, Nancy-Université, Rue M. Roubault, 54501 Vandoeuvre-les-Nancy Cedex, France;(2) Federal University of Espirito Santo, Vitoria, Brazil;(3) Kobe University, Kobe, Japan
Abstract:
This paper synthesizes the state-of-the art of the various laboratory testing techniques presently available for measuring
the water hydraulic constitutive functions of unsaturated soils. Emphasis is on the laboratory testing techniques for measuring
the soil–water retention curves and the water hydraulic conductivity functions of unsaturated soils. The significant recent
advances in the investigation of the hydraulic behaviour of unsaturated swelling soils, are also presented. Comprehensive
recent references on each measurement method are listed and discussed.