Modeling of Laboratory Tests on Saint-Roch-de-l'Achigan Clay with S-CLAY1S Model
Journal article, 2017

This technical note presents some results of numerical simulations performed to evaluate the influence of anisotropy and destructuration on the stress-strain response of Saint-Roch-de-l'Achigan clay. The oedometer and triaxial tests were simulated with the finite-element method using two different constitutive models to represent the soil: the S-CLAY1S model, which accounted for anisotropy and destructuration, and the isotropic modified Cam clay model (MCC), which was used for comparison. In contrast to the MCC model, the S-CLAY1S model was able to simulate the compression curve for the whole range of stresses with one parameter set and, hence, represented soil behavior in the triaxial test in a more realistic way than the MCC. The results of this study confirm that when using recommended procedures for the determination and calibration of the input parameters, the S-CLAY1S model represents well the overall behavior of Saint-Roch-de-l'Achigan clay in the specific cases analyzed.

Oedometer test


Soft clay

Interparticle bonding

Constitutive model

Numerical simulation

Triaxial test


L. D. G. Deotti

Federal University of Rio de Janeiro

Eletrobrás Centrais Elétricas S.A.

Minna Karstunen

Chalmers, Civil and Environmental Engineering, GeoEngineering

M. C. F. de Almeida

Federal University of Rio de Janeiro

M. D. S. de Almeida

Federal University of Rio de Janeiro

International Journal of Geomechanics

1532-3641 (ISSN)

Vol. 17 2 06016018

Subject Categories

Mechanical Engineering

Oceanography, Hydrology, Water Resources

Areas of Advance

Building Futures (2010-2018)



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