Evaluation of correlation between parameters from CPTU and DMT tests and soil type behavior chart

Abstract

This paper presents the correlation of soil parameters obtained from the dilatometer of the Marchetti (DMT) and the cone penetration tests (CPT). The data for the development of these correlations come from four experimental sites of the Department of Geotechnical Engineering of the Warsaw University of Life Sciences – SGGW: test embankment in Antoniny, and the Koszyce and Nielisz water dams, Stegna test site, WULS-SGGW Campus. Additionally, the relationship between the soil behavior type classification index (Ic) from the Cone Penetration Test (CPT) and the material index (I D) from the dilatometer test (DMT) based on the Robertson method, modified in this paper, is presented. Finally, a new soil behavior type classification chart was presented, allowing to determine not only the type and condition of the soil, but also the stress history (OCR).

CPT Parameters of Loess Subsoil in Lublin Area

“…It makes it possible to examine the soil profile to considerable depths, to derive many geotechnical parameters of the soil from the measured values, and at the same time it remains a relatively economical and quick test [13,14]. CPT sounding is currently the most universal soil test and there are numerous correlations both for deriving soil parameters from the data recorded during the test and for recognizing the type of soil [14][15][16][17][18][19][20]. In Poland, Robertson's SBT (soil behavior type) [21] chart is widely used for the interpretation of soil type, modified and adapted to Polish conditions by Młynarek et al [22].…”