Volume 31, Issue 5 (September 2008)

    EIT Oedometer: An Advanced Cell to Monitor Spatial and Time Variability in Soil with Electrical and Seismic Measurements

    (Received 1 August 2007; accepted 2 March 2008)

    Published Online: 2008

    CODEN: GTJOAD

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    Abstract

    The paper presents an innovative oedometer cell (EIT oedometer), accomplishing for monitoring the spatial and temporal evolution of different physical quantities inside soil samples through seismic and electric non-destructive measurements. The technical solutions implemented to perform correct electrical measurements are reported together with the results of benchmark tests demonstrating the potentialities and the limits of the 3D electrical resistivity tomography in detecting both pre-existing and induced sample heterogeneities. It is shown that resistivity imaging can offer a powerful tool for the investigation of soil heterogeneities not detected by external measurements. The relationship between electrical resistivity and soil properties makes this application potentially useful for monitoring the evolution of transient processes as for instance those related to the diffusion of chemical species in clay soils and associated coupled chemo-mechanical processes, whereas the information gathered by classical oedometer measurements and by seismic waves propagation could be used to explore the associated macroscopic phenomena.


    Author Information:

    Comina, C.
    Research Associate, Dipartimento di Ingegneria Strutturale e Geotecnica, Politecnico di Torino,

    Foti, S.
    Assistant Professor, Dipartimento di Ingegneria Strutturale e Geotecnica, Politecnico di Torino,

    Musso, G.
    Assistant Professor, Dipartimento di Ingegneria Strutturale e Geotecnica, Politecnico di Torino, Milano

    Romero, E.
    Head of Geotechnical Laboratory, Universitat Politècnica de Catalunya, Barcelona


    Stock #: GTJ101367

    ISSN: 0149-6115

    DOI: 10.1520/GTJ101367

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    Author
    Title EIT Oedometer: An Advanced Cell to Monitor Spatial and Time Variability in Soil with Electrical and Seismic Measurements
    Symposium , 0000-00-00
    Committee D18