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Interaggregate Forces and Energy Potential Effect on Clay Deformation

Abstract : This study aims to propose a new model for clay behavior by incorporating physical-chemical effects acting between clay clusters using the Chang and Hicher micromechanical approach. Local mechanisms are thus introduced through repulsive and attractive forces similar to double-layer van der Waals forces, which are obtained from the derivation of energy potentials. A specific study of local parameters and their evolution is conducted using experimental data from the mineralogy variation provoked by the variation of a remolded saturated reconstituted clayey mixture consisting of kaolinite and montmorillonite ranging from 0 to 100% montmorillonite. Using scale transition, the results of micro-macrocalculations under an isotropic loading path show a very good agreement with experimental results.
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Mahdia Hattab, Ching S. Chang. Interaggregate Forces and Energy Potential Effect on Clay Deformation. Journal of Engineering Mechanics - ASCE, American Society of Civil Engineers, 2015, 141 (7), ⟨10.1061/(ASCE)EM.1943-7889.0000898⟩. ⟨hal-01514681⟩

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