Browsing Norwegian Geotechnical Institute (NGI) Digital Archive by Author "D'Ignazio, Marco"

Now showing items 1-11 of 11

    • Bestemmelse av hviletrykk (K0) i norske leirer – anbefalinger basert på en sammenstilling av lab-, felt- og erfaringsdata 

      L’Heureux, Jean-Sébastien; Ozkul, Zeynep; Lacasse, Suzanne; D'Ignazio, Marco; Lunne, Tom (Chapter, 2017)
      The purpose of this study is to present guidelines and correlations to estimate the coefficient of earth pressure at rest (K0) in Norwegian clays in absence of site-specific data. A database of K0-measurements from advanced ...

    • CPTU CORRELATIONS FOR CLAYS 

      D'Ignazio, Marco (NGI Rapport;20150014-13-R, Report, 2019-02-20)
      As part of the R&D project GEODIP-SP8, a multivariate high-quality database of sensitive clays consisting of laboratory strength and consolidation test results, index parameters and CPTU parameters was established. The ...

    • CPTU correlations for Norwegian clays: an update 

      Paniagua Lopez, Ana Priscilla; D'Ignazio, Marco; L Heureux, Jean-Sebastien; Lunne, Tom; Karlsrud, Kjell (Peer reviewed; Journal article, 2019)
      Geotechnical design in clay areas in Norway is mainly based on piezocone (CPTU) tests results. Strength and stiffness parameters are usually derived from CPTU parameters and empirical correlations. In order to improve ...

    • Estimation of preconsolidation stress of clays from piezocone by means of high-quality calibration data 

      D'Ignazio, Marco; Lunne, Tom; Andersen, Knut H; Yang, Shaoli; Di Buò, Bruno; Länsivaara, Tim (Peer reviewed; Journal article, 2019)
      An extensive database of high-quality piezocone (CPTU) and laboratory oedometer test data on onshore and offshore clays worldwide has been established. The database covers a wide range of index parameters and overconsolidation ...

    • Evaluation of existing CPTu-based correlations for the deformation properties of Finnish soft clays 

      Di Buò, Bruno; Selänpää, Juha; Lansivaara, Tim Tapani; D'Ignazio, Marco (Chapter, 2018)
      An extensive research program for soil testing has been conducted on five soft clay deposits located in Finland. This research project aims to collect data from high quality in-situ and laboratory tests and derive correlations ...

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

      Selänpää, Juha; Di Buò, Bruno; Haikola, M.; Länsivaara, Tim; D'Ignazio, Marco (Chapter, 2018)
      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 ...

    • Evaluation of sample quality from different sampling methods in Finnish soft sensitive clays 

      Di Buò, Bruno; Selänpää, Juha; Lansivaara, Tim Tapani; D'Ignazio, Marco (Peer reviewed; Journal article, 2018)
      The determination of reliable geotechnical parameters from laboratory testing is highly dependent on sample quality. Over the past decades, undisturbed sampling of soft sensitive clays has been performed using various ...

    • First-time landslides in Vashon advance glaciolacustrine deposits, Puget Lowland, U.S.A. 

      Badger, Thomas C.; D'Ignazio, Marco (Peer reviewed; Journal article, 2018)
      Advance glaciolacustrine (Qglv) deposits from the last continental glaciation are widespread in the densely populated Puget Lowland and are prone to shallow landsliding. Much less frequently in historic time, new landslides ...

    • Impact of sample quality on CPTU correlations in clay – Example from the Rakkestad clay 

      L'Heureux, Jean-Sébastien; Gundersen, Aleksander S.; D'Ignazio, Marco; Smaavik, Tone Fallan; Kleven, Arne; Rømoen, Magnus; Karlsrud, Kjell; Paniagua Lopez, Ana Priscilla; Hermann, Steinar (Chapter, 2018)
      As part of the zoning plan for the new 30 km long highway, E16, from Nybakk to Slomarka, an extensive laboratory and field testing campaign was conducted by NGI. The deposit along the highway is a normally to slightly ...

    • Investigation and geotechnical characterization of Perniö clay, Finland 

      Di Buò, Bruno; D'Ignazio, Marco; Selänpää, Juha; Haikola, Markus; Länsivaara, Tim; Di Sante, Marta (Peer reviewed; Journal article, 2019)
      Understanding the behavior of soft sensitive clays is a key aspect of geotechnical design, especially in those regions where constructions are planned in marine clay areas. In Finland, one of the major geotechnical issues ...

    • Small strain stiffness within logarithmic contractancy model for structured anisotropic clay 

      Sivasithamparam, Nallathamby; D'Ignazio, Marco; Tsegaye, Anteneh Biru; Castro, J.; Madshus, Christian (Peer reviewed; Journal article, 2021)
      Stiffness of soils in the small strain region is high and it decays nonlinearly with increasing shear strains or with mobilization of shear stresses. However, the commonly used critical state based constitutive models use ...