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Evaluation of existing CPTu-based correlations for the undrained shear strength of soft Finnish clays

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Original languageEnglish
Title of host publicationCone Penetration Testing 2018
Subtitle of host publicationProceedings of the 4th International Symposium on Cone Penetration Testing (CPT'18)
PublisherCRC Press
Number of pages7
ISBN (Electronic)978-0-429-00048-5
ISBN (Print)978-1-138-58449-5
Publication statusPublished - 2018
Publication typeA4 Article in a conference publication
EventInternational Symposium on Cone Penetration testing -
Duration: 21 Jun 201822 Jun 2018


ConferenceInternational Symposium on Cone Penetration testing


The Tampere University of Technology has been carrying out an extensive research program on
soil testing in Finland. The aim of this research project is to collect data from high-quality in situ and laboratory
tests and derive correlations for strength and deformation properties specific to Finnish clays. Correlation mod-
els for the undrained shear strength of soft clays based on CPTu measurements have been proposed in the
literature by several authors. However, such models are often calibrated from a specific site or soil type. Thus,
validation of these models is required before applying them to different soil conditions. In this paper, the exist-
ing correlations for the undrained shear strength of soft clays based on CPTu data are compared to test the
results from different sites in Finland. The validity of the existing models is assessed for Finnish clays by eval-
uating their bias and uncertainties.

Publication forum classification

Field of science, Statistics Finland