Measurements of permeability of saturated and unsaturated soils

The management and engineering assessments of geotechnical assets within the national transportation inventory require an appropriate knowledge permeability saturated unsaturated soils. Determination soils can be carried out using direct measurements, whereas that is often made indirect methods based on soil water retention curve. In this study attempt was to develop a novel approach for measuring tests were conducted 100 mm dia. reconstituted compacted samples glacial till. Suctions generated by circulating low-humidity air through slender sand column located at centre samples. Measurements suction two tensiometers radially base drying process terminated when observed suctions reached or approached limiting capacity (1500 kPa). Combinations measurements volumetric strains during used determine adopting analytical solutions as applicable radial flow condition.