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Research Article
Constitutive modeling of unsaturated aggregated soils
Article first published online: 28 OCT 2010
DOI: 10.1002/nag.888
Copyright © 2010 John Wiley & Sons, Ltd.
Issue
International Journal for Numerical and Analytical Methods in Geomechanics
Volume 34, Issue 17, pages 1846–1876, 10 December 2010
Additional Information
How to Cite
Koliji, A., Laloui, L. and Vulliet, L. (2010), Constitutive modeling of unsaturated aggregated soils. Int. J. Numer. Anal. Meth. Geomech., 34: 1846–1876. doi: 10.1002/nag.888
Publication History
- Issue published online: 28 OCT 2010
- Article first published online: 28 OCT 2010
- Manuscript Accepted: 13 DEC 2009
- Manuscript Revised: 26 NOV 2009
- Manuscript Received: 20 NOV 2008
- Abstract
- Article
- References
- Cited By
Keywords:
- soil structure;
- suction;
- double porosity;
- constitutive modeling;
- elasto-plasticity
Abstract
A coupled water retention–mechanical constitutive model for unsaturated aggregated soils is presented here. Based on the multi-scale experimental results, the model incorporates the inter-particle bonding, fabric and partial saturation effects in a single framework. It is formulated within the framework of hardening elasto-plasticity and is based on the critical state concept. Prior to model validation, we evaluate the model parameters and propose determination procedures for the main new parameters. Finally, the model is examined for its capability in simulating the experimental results of aggregated and bonded soils. Results of these simulations show that the model addresses the most features arising from the combined effects of soil structure and partial saturation. Copyright © 2010 John Wiley & Sons, Ltd.