CPT-based classification of soft organic clays and peat

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An updated CPT-based classification system of organic clays and peat is proposed based on an extensive pairwise established database of classification tests and CPT measurements. This new classification system is proposed to supplement the existing dimensionless qt/pa-Rf-chart of Robertson (2010). The Robertson (2010) dimensionless classification system is selected for refinement because it appears to perform better than normalized systems for peats with very low stresses (<20 kPa). A combination with Robertson (2009 and 2016) is possible in cases where a stress normalization cut-off is used.
Original languageEnglish
Title of host publicationCone Penetration Testing 2022
EditorsGuido Gottardi, Laura Tonni
Place of PublicationLondon
PublisherCRC Press
Number of pages6
ISBN (Electronic)9781003308829
ISBN (Print)9781032312590
Publication statusPublished - 2022
Event5th International Symposium on Cone Penetration Testing - Bologna, Italy
Duration: 8 Jun 202210 Jun 2022


Conference5th International Symposium on Cone Penetration Testing
Abbreviated titleCPT 22
Internet address


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