| Issue |
E3S Web Conf.
Volume 195, 2020
4th European Conference on Unsaturated Soils (E-UNSAT 2020)
|
|
|---|---|---|
| Article Number | 02004 | |
| Number of page(s) | 4 | |
| Section | Teoretical and Numerical Models | |
| DOI | https://doi.org/10.1051/e3sconf/202019502004 | |
| Published online | 16 October 2020 | |
An extended generalized effective stress for active clays
Swiss Federal Institute of Technology in Lausanne, EPFL, Laboratory of Soil Mechanics, LMS, Station 18, CH 1015 Lausanne, Switzerland
* Corresponding author: angelica.tuttolomondo@epfl.ch
An effective stress concept for active clays is formulated to improve the modelling of these materials under a variety of environmental conditions. In particular, the mechanical effects induced by a change in the chemical potential of pore water associated with a change of its pressure (even in the negative range), as well as a change of its chemical composition, are considered. Some implications of the proposed framework are shown with reference to shear strength results related to unsaturated conditions. The proposed approach allows to describe the shear strength envelope consistently by using a unique set of shear strength parameters irrespective of the pore water chemical composition and of the saturation state.
© The Authors, published by EDP Sciences 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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