| Issue |
MATEC Web Conf.
Volume 337, 2021
PanAm-Unsat 2021: 3rd Pan-American Conference on Unsaturated Soils
|
|
|---|---|---|
| Article Number | 02006 | |
| Number of page(s) | 7 | |
| Section | Constitutive and Numerical Modeling | |
| DOI | https://doi.org/10.1051/matecconf/202133702006 | |
| Published online | 26 April 2021 | |
A general mathematical framework for modelling soil-water retention behaviour
1 Geotechnical Department, National Laboratory for Civil Engineering (LNEC), Lisbon, Portugal
2 CERIS/IST, Instituto Superior Técnico, University of Lisbon, Lisbon, Portugal
* Corresponding author: rafaela.cardoso@ist.utl.pt
A new constitutive model for the soil-water retention behaviour of unsaturated soils is proposed, able to reproduce the main drying and wetting paths, the cyclic retention behaviour and its dependence on the specific volume. The most significant aspect is the inclusion of the evolution, with the specific volume, of the degree of saturation when suction tends to zero in wetting paths considering the presence of entrapped air bubbles. The model is used to reproduce with success the drying/wetting cycles of two Pearl clay samples.
© The Authors, published by EDP Sciences, 2021
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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