New chart for classification of organic soils from dilatometer tests (DMT) results

Abstract The new chart for classification of organic soils from dilatometer tests (DMT) results. To identify the type of soils in subsoil profile from the dilatometer (DMT) tests the diagram charts are commonly used. Marchetti (1980), Marchetti and Crapps (1981) proposed the diagram chart based on the values of material index (ID) and the dilatometer modulus (ED). This chart is helpful for identifying both mineral (clay, silt and sand) and organic soils. The classification to identify organic soils is not accurate enough. This paper proposes a new classification chart for organic soil identification. It was developed based on the comprehensive investigation of organic sediments performed in the Department of Geotechnical Engineering of Warsaw University of Life Sciences in years 1980-2012