Intepretation of CPTU results in terms of soil design parameters at Satnica Djakovacka, Croatia

A well-documented case history on the use of CPTU and SPT data is summarised. Over 2000m length of soil was interpreted using cone penetration tests with pore pressure measurement (CPTU) during extensive geotechnical investigations as performed for the design of the Corridor Vc motorway which, on its section through Slavonia, connects the Republic of Croatia with Hungary in the north, and with Bosnia and Herzegovina in the south. An attempt to correlate cone penetration test (CPTU) and standard penetration test (SPT) results is presented herein.The testingwas performed in overconsolidated silty clay formation in order to estimate physical and mechanical properties of the soil. In a specific site near Djakovo in Slavonia (Croatia) the CPTU and SPT were performed. CPTU results were interpreted based on results obtained by laboratory testing of undisturbed samples extracted from the borehole drilled 2m away from the CPTU test location. The properties are estimated using appropriate empirical CPTU correlations which have been successfully adapted to local conditions.