Journal Published Online: 20 August 2018
Volume 47, Issue 6

A Note on Determination of the Preconsolidation Pressure

CODEN: JTEVAB

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, Australia
Taheri, Abbas
School of Civil, Environmental and Mining Engineering, The University of Adelaide, SA, Australia
Deng, An
School of Civil, Environmental and Mining Engineering, The University of Adelaide, SA, Australia
Azimi, Mahdieh
Department of Irrigation and Reclamation Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
Pages: 16
Price: $25.00
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Stock #: JTE20170689
ISSN: 0090-3973
DOI: 10.1520/JTE20170689