Clay Soil Characterisation by the New Seismic Dilatometer Marchetti Test (SDMT)

This paper describes and compares the results of in situ laboratory investigations performed on Catania soil that were carried out to determine the variation of shear modulus with depth and strain level by Seismic Dilatometer Marchetti Test (SDMT), Down-Hole (DH) Test and Resonant Column Tests (RCT). Some considerations on shear modulus degradation evaluation by SDMT are proposed. The available data also enabled one to compare the shear modulus profile obtained by empirical correlations based on CPT or laboratory results with Down Hole Test and Seismic Dilatometer Marchetti Test.