ABSTRACT

Soil-water characteristic curves were determined for 21 undisturbed soil samples, 11 of which were of transported origin and the remainder residual. Indicator tests were performed on the samples and relationships between them and the corresponding characteristic curve investigated. It was found that for soils of transported origin, the characteristic curves are related to the indicator tests. Little, if any, relationship is evident between the indicators and characteristic curves for residual soils. From this information a preliminary estimate of moisture content changes associated with suction changes can be assessed, and likely changes of volume, shear strength, permeability and water storage in undisturbed unsaturated transported soils subsequently estimated.