Analysis of CPTU data for the geotechnical characterization of intermediate sediments

M.F. García Martínez, L. Tonni, G. Gottardi, Irene Rocchi

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    733 Downloads (Pure)

    Abstract

    The intermediate soil (e.g. silt, sandy silt, clayey silt) response at the standard cone penetration (CPT) velocity of 20 mm/s is generally partially drained, falling between that of sand and clay. As a result, a proper interpretation of CPT (or CPTU) in such mixed soils is not always straightforward. In order to properly analyse the in situ soil response and avoid incorrect estimates of soil parameters, the preliminary assessment of drainage conditions is essential. In this paper, changes in normalized CPTU measurements caused by changes in cone velocity are analysed. Penetration rate effects are assessed by means of No. 8 piezocone tests, with penetration rates ranging from about 0.9 to 61.7 mm/s. Tests were performed at a site located at the southern margin of the Po river valley (Northern Italy), where the subsoil mainly consists in a clayey silt deposit. Limitations on the applicability of some widely used empirical correlations, proposed for sands, are investigated and some preliminary results are shown.
    Original languageEnglish
    Title of host publicationCone Penetration Testing 2018 : Proceedings of the 4th International Symposium on Cone Penetration Testing
    PublisherCRC Press
    Publication date2018
    Pages281-287
    ISBN (Print)978-1-138-58449-5
    ISBN (Electronic)9780429000485
    Publication statusPublished - 2018
    Event4th International Symposium on Cone Penetration Testing - Delft, Netherlands
    Duration: 21 Jun 201823 Jun 2018
    Conference number: 4

    Conference

    Conference4th International Symposium on Cone Penetration Testing
    Number4
    Country/TerritoryNetherlands
    CityDelft
    Period21/06/201823/06/2018

    Fingerprint

    Dive into the research topics of 'Analysis of CPTU data for the geotechnical characterization of intermediate sediments'. Together they form a unique fingerprint.

    Cite this