Assessment of sample quality in soft clay using shear wave velocity and suction measurements

S. Donohue, M. Long

    Research output: Contribution to journalArticle

    27 Citations (Scopus)

    Abstract

    The characterisation of soils for civil engineering purposes depends on removing sufficiently high-quality samples from the ground. Accurate evaluation of sample quality is therefore important if reliable design parameters are to be determined. This paper describes the use of unconfined shear wave velocity (V s) and suction (u r) measurements to assess sample quality rapidly in soft clay. Samples of varying quality from three well-characterised soft clay sites are initially assessed using conventional techniques, and their results compared with V s and u r measurements performed on the same samples. It is observed that the quality of samples indicated by these measurements is very similar to those inferred from traditional disturbance measures, with V s being the more reliable indicator. A tentative empirically derived criterion, based on samples tested in this project, is proposed to quantify sample disturbance combining both V s and u r measurements. Further work using this criterion on different materials is important so as to test its usefulness.

    Original languageEnglish
    Pages (from-to)883-889
    Number of pages7
    JournalGéotechnique
    Volume60
    Issue number11
    DOIs
    Publication statusPublished - Nov 2010

    ASJC Scopus subject areas

    • Earth and Planetary Sciences (miscellaneous)
    • Geotechnical Engineering and Engineering Geology

    Fingerprint Dive into the research topics of 'Assessment of sample quality in soft clay using shear wave velocity and suction measurements'. Together they form a unique fingerprint.

    Cite this