Micromechanics of non-active clays in saturated state and DEM modelling

Arianna Gea Pagano, Alessandro Tarantino, Matteo Pedrotti, Vanessa Magnanimo, Kit Windows-Yule, Thomas Weinhart

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Abstract

The paper presents a conceptual micromechanical model for 1-D compression behaviour of non-active clays in saturated state. An experimental investigation was carried out on kaolin clay samples saturated with fluids of different pH and dielectric permittivity. The effect of pore fluid characteristics on one-dimensional compressibility behaviour of kaolin was investigated. A three dimensional Discrete Element Method (DEM) was implemented in order to simulate the response of saturated kaolin observed during the experiments. A complex contact model was introduced, considering both the mechanical and physico-chemical microscopic interactions between clay particles. A simple analysis with spherical particles only was performed as a preliminary step in the DEM study in the elastic regime.
Original languageEnglish
Article number15023
Number of pages4
JournalEPJ Web of Conferences
Volume140
DOIs
Publication statusPublished - 3 Jul 2017
Event8th International Conference on Micromechanics on Granular Media - Montpellier, France
Duration: 3 Jul 20177 Jul 2017

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Keywords

  • discrete element method
  • kaolin clay
  • micromechanics

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