Influence of penetration rate on CPTU measurements in saturated silty soils

Maria F. Garcia Martinez, Laura Tonni, Guido Gottardi, Irene Rocchi

Research output: Contribution to conferencePaperResearchpeer-review

Abstract

Drainage behaviour of intermediate soils (e.g. silts, sandy silts, clayey silts) during standard cone penetration rate (20 mm/s) typically falls between that of sand and clay, for which fully drained and fully undrained conditions are expected to apply, respectively. Partial drainage phenomena may be evaluated by varying the penetration rate within a range which depends on the consolidation characteristics of the soil to be tested. This paper presents the results of a variable rate piezocone test (CPTU) campaign carried out in a clayey silt deposit of the southern margin of the Po river valley (Forlì, Italy). In order to assess the in situ drainage conditions, normalized piezocone measurements have been interpreted in terms of a non-dimensional penetration rate. In this way, it is potentially possible to detect the transition point from undrained to partially drained and drained responses. Results have been compared to previously reported data on both natural deposits and laboratory reconstituted soils.
Original languageEnglish
Publication date2016
Number of pages6
Publication statusPublished - 2016
Externally publishedYes
Event5th International Conference on Geotechnical and Geophysical Site Characteristion (ISC’5) - Jupiter's Hotel, Australia
Duration: 5 Sep 20169 Sep 2016
http://www.isc5.com.au/

Conference

Conference5th International Conference on Geotechnical and Geophysical Site Characteristion (ISC’5)
LocationJupiter's Hotel
CountryAustralia
Period05/09/201609/09/2016
Internet address

Cite this

Martinez, M. F. G., Tonni, L., Gottardi, G., & Rocchi, I. (2016). Influence of penetration rate on CPTU measurements in saturated silty soils. Paper presented at 5th International Conference on Geotechnical and Geophysical Site Characteristion (ISC’5), Australia.