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    Volume 47, Issue 6 (November 2019)

    Special Issue Paper

    A Note on Determination of the Preconsolidation Pressure

    (Received 24 November 2017; accepted 27 February 2018)

    Published Online: 01 November 2019

    CODEN: JTEVAB

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    Abstract

    The preconsolidation pressure, σ′y, is commonly interpreted by means of empirical observations (or graphical constructions) with respect to e–logσ′ stress patterns (e = void ratio, and σ′ = effective stress) exhibited in the conventional oedometer test. As with any empirical/graphical procedure, the resulting estimations are associated with subjective variability and thus yield inconsistent results among individuals. Recently, the mathematical translational technique was implemented by the authors, thereby promoting a subjective-free computational framework, denoted as the 3PRH framework, for interpretation of σ′y with respect to four common graphical constructions (i.e., three semi-log and one bi-log construction), covering a variety of geometrical complexity. In this article, the 3PRH framework was first revisited in a more practical sense. The framework was then implemented to a compiled database of 34 consolidation tests to arrive at reliable correlations/comparisons between the four graphical constructions. Finally, the settlement dependency on σ′y (or type of graphical construction) was statistically examined to recommend measures for reliable settlement analyses.

    Author Information:

    Soltani, Amin
    School of Civil, Environmental and Mining Engineering, The University of Adelaide, SA

    Taheri, Abbas
    School of Civil, Environmental and Mining Engineering, The University of Adelaide, SA

    Deng, An
    School of Civil, Environmental and Mining Engineering, The University of Adelaide, SA

    Azimi, Mahdieh
    Department of Irrigation and Reclamation Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj,


    Stock #: JTE20170689

    ISSN:0090-3973

    DOI: 10.1520/JTE20170689

    Author
    Title A Note on Determination of the Preconsolidation Pressure
    Symposium ,
    Committee D18