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Article Dans Une Revue European Journal of Environmental and Civil Engineering Année : 2021

Study of the volumetric behavior of a residual tropical clay

Résumé

This paper focuses on the volumetric behavior of residual tropical soils. Two residual tropical soils belonging to the same geological formation and located in the coastal sedimentary basin of Gabon are studied. These soils are known as pelitic soils. As the hydromechanical behavior of residual tropical soil is still relatively unknown, it is interesting to study the influence of soil suction on the volumetric behavior of the residual tropical soil through shrinkage curves. The purpose of this study is twofold. First, to study volume variations in the two tropical residual soils. Secondly, to propose a modelling of the soil-water retention curves (SWRCs) of these soils. For this purpose, drying tests are carried out to study the volume variations of the soil. These tests are supported by determining a bi-linear model to enable the variation in suction during drying to be estimated. Tests to determine SWRCs at different initial dry densities are used to calibrate the bi-linear relationship between void ratio, suction. The modified Kov´acs model (MK model) has been adapted to model the SWRCs of the studied soils.
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hal-04611108 , version 1 (13-06-2024)

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Bilal Yoka, Mathilde Morvan, Pierre Breul. Study of the volumetric behavior of a residual tropical clay. European Journal of Environmental and Civil Engineering, 2021, 26 (16), pp.8212-8228. ⟨10.1080/19648189.2021.2021995⟩. ⟨hal-04611108⟩
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