These proceedings are a continuation of the series of International Conferences in Germany entitled Mechanics of Unsaturated Soils. The objective is to discuss and understand unsaturated soil behaviour, so that engineered activities are improved in terms of judgement and quality. In addition to knowledge of classical concepts, it is a challenge to adapt convincing new concepts and present them in such a way that they can be used in engineering practices.
Microstructure and Fabric.- Influence of Relative Density and Clay Fraction on Soils Collapse.- Microstructure Features in the Behaviour of Engineered Barriers for Nuclear Waste Disposal.- Microstructure of Gypsiferous Crust and Its Importance to Unsaturated Soil Behaviour.- Fabric Changes in Compacted London Clay Due to Variations in Applied Stress and Suction.- Microstructure of a Lime Stabilised Compacted Silt.- Measuring Suction.- Errors in Total Suction Measurements.- Application of a Dew Point Method to Obtain the Soil Water Characteristic.- A Comparative Study of Soil Suction Measurement Using Two Different High-Range Psychrometers.- Determination of the Soil Water Retention Curve with Tensiometers.- Tensiometer Development for High Suction Analysis in Laboratory Lysimeters.- Strength and Dilatancy.- Dilatancy of Coarse Granular Aggregates.- A Laboratory Investigation into the Effect of Water Content on the CBR of a Subgrade soil.- Shear Strength Affected by Suction Tension in Unsaturated Fine Grained Soils?.- Shear Strength Behaviour of Unsaturated Silty Soil.- Experimental Investigation on the Time Dependent Behaviour of a Multiphase Chalk.- Testing Unsaturated Soil for Plane Strain Conditions: A New Double Wall Biaxial Device.- Influence of State Variables on the Shear Behaviour of an Unsaturated Clay.- Effect of Capillary and Cemented Bonds on the Strength of Unsaturated Sands.- Determining the Shear Strength of Unsaturated Silt.- Factors Affecting Tensile Strength Measurement and Modilc™