STP892

    Controlled-Strain, Controlled-Gradient, and Standard Consolidation Testing of Sensitive Clays

    Published: Jan 1986


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    Abstract

    The objectives of this paper are threefold: (1) to compare the results obtained from constant rate of strain (CRS) and controlled-hydraulic gradient (CHG) consolidation tests with those obtained from incremental loading tests, (2) to compare the experimental data obtained in this study with the results of other investigators, and (3) to determine the possibility of using either CRS or CHG testing or both in geotechnical investigations dealing with soft clays of Eastern Canada.

    The results of all the consolidation tests yield a unique relationship between preconsolidation pressure and strain rate. Both CRS and CHG tests performed following recommended procedures give values of the preconsolidation pressures which are higher than both those obtained in incremental load tests and those inferred from field studies. Both a simple creep law and a modified equation based on the rate process theory are found to adequately represent the observed soil response.

    Keywords:

    consolidation tests, incremental, controlled strain rate, controlled gradient, sensitive clays


    Author Information:

    Silvestri, V
    Associate Professor, Professor, and Graduate Research Assistant, Department of Civil Engineering, École Polytechnique, Montreal, P.Q.

    Yong, RN
    William Scott Professor of Civil Engineering and Applied Mechanics, Director, Geotechnical Research Centre, McGill University, Montreal, P.Q.

    Soulié, M
    Associate Professor, Professor, and Graduate Research Assistant, Department of Civil Engineering, École Polytechnique, Montreal, P.Q.

    Gabriel, F
    Associate Professor, Professor, and Graduate Research Assistant, Department of Civil Engineering, École Polytechnique, Montreal, P.Q.


    Paper ID: STP34626S

    Committee/Subcommittee: D18.05

    DOI: 10.1520/STP34626S


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