Normal Compression Planar Surfaces for Specific Volume and Degree of Saturation

Lloret-Cabot, M. , Wheeler, S.J. and Sanchez, M. (2018) Normal Compression Planar Surfaces for Specific Volume and Degree of Saturation. In: 2nd Pan-American Conference on Unsaturated Soils (PANAM-UNSAT 2017), Dallas, TX, USA, 12-15 Nov 2017, pp. 380-390. ISBN 9780784481684 (doi:10.1061/9780784481684.039)

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The glasgow coupled model (GCM) predicts unique unsaturated normal compression planar surfaces for specific volume and degree of saturation when the soil states are at the intersection of the mechanical (M) and wetting retention (WR) yield curves. More generally, the model predictions for any stress path where plastic volumetric strains (compression) and plastic increases of degree of saturation occur simultaneously correspond to stress states on these two planar surfaces. The existence and form of these planar surfaces has been only validated against isotropic compression data on unsaturated samples of compacted Speswhite kaolin, but their suitability to represent one-dimensional (1D) loading conditions remains unclear. This paper investigates this aspect by deriving equivalent expressions for 1D normal compression conditions and then comparing them against the experimental response of unsaturated samples of compacted Jossigny silt subjected to 1D compression paths at different constant values of matric suction.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Wheeler, Professor Simon and Lloret-Cabot, Dr Marti
Authors: Lloret-Cabot, M., Wheeler, S.J., and Sanchez, M.
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Published Online:20 June 2018
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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
717661COUPLEDSimon WheelerEuropean Commission (EC)706712ENG - ENGINEERING INFRASTRUCTURE & ENVIR