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.
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