Characterization of intermediate soils by innovative in-situ testing procedures using Medusa DMT

This paper illustrates early findings obtained using the Medusa DMT/SDMT – the newest fully automated version of the flat/seismic dilatometer – at the benchmark silt test site of Halden, Norway, part of the Geo-Test Sites (NGTS) research infrastructure managed by the Norwegian Geotechnical Institute. The comparison of results obtained by Medusa (S)DMT tests carried out adopting standard and variable penetration/pressurization rates permits to identify some trends in response to different test rates in the silt layers. These preliminary results support the potential of this approach for improving the in-situ characterization of intermediate soils.