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Estimation of the shear strength of a coarse soil with high fines content by parallel gradation method

Abstract : The determination of the mechanical properties of soils containing particles larger than the allowable size of standard laboratory equipments is complex. It is indeed necessary to remove the coarsest fraction to carry out the tests. This scalping poses a problem of reliability of the results at the scale of the structure. Parallel gradation is the method commonly used for estimating the shear strength of heterogeneous granular soils from tests on their finer fraction. However, the effect of high fines content on the estimation of shear strength by this method is not well understood. The results of this study showed that the parallel gradation method could predict the friction angle of the initial soil with high fines content when the modelled soil had a similar skeleton as the initial soil. However, the cohesion of the initial soil was overestimated.
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https://hal.univ-lorraine.fr/hal-02404724
Contributor : N'Guessan Kouakou <>
Submitted on : Friday, December 13, 2019 - 12:02:01 PM
Last modification on : Tuesday, December 17, 2019 - 2:26:03 AM
Long-term archiving on: : Saturday, March 14, 2020 - 1:07:36 PM

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  • HAL Id : hal-02404724, version 1
  • ARXIV : 2001.03545

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N'Guessan Kouakou, Olivier Cuisinier, Farimah Masrouri, Emmanuel Lavallée, Tangi Le Borgne. Estimation of the shear strength of a coarse soil with high fines content by parallel gradation method. 7th International Symposium on Deformation Characteristics of Geomaterials, Jun 2019, Glasgow, United Kingdom. ⟨hal-02404724⟩

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