Comparative Analysis of Cone Resistances in Cone Penetration Test (CPTu) and Dynamic Probe Heavy Test (DPH)

Abstract

This paper presents a comparison of geotechnical soil testing with the use of Piezocone Penetration Test (CPTu) and Dynamic Probing Heavy (DPH) in a uniform coarse-grained medium located in southwest part of Poland. The soil medium was identified in detail. The interpretation of results included both grain-size analysis of samples from drillholes and soil behavior type results obtained from the Robertson nomograph (Soil behaviour type from the CPT: an update. In: 2nd international symposium on cone penetration testing, USA, 2010). Cone penetration resistances qc obtained in the static CPTu tests were compared with the results of dynamic probing N10H and of dynamic point resistance qd obtained in the dynamic DPH tests. The evaluation of soil density index was based on both dynamic DPH and static CPTu probing. The obtained results were analyzed and plotted in a form of graphs corresponding to the Eurocode 7 and other works describing coarse-grained soils.