https://doi.org/10.1051/epjconf/202124908008
Multi-scale cohesion force measurements for cemented granular materials
1
RECOVER, INRAE Aix Marseille Univ, Aix-en-Provence, France
2
BAM, Federal Institute for Materials Research and Testing, Berlin, Germany
* e-mail: li-hua.luu@inrae.fr
Published online: 7 June 2021
We experimentally investigated cohesion of artificially bonded granular materials made of spherical glass beads cemented by solid paraffin bonds. By means of laboratory tests designed and carried out for investigation at different scales, we measured the tensile yield strength for solid bonds both at the inter-particle micro-scale and cemented samples at the meso-scale. A parametric study has been performed by varying some of the granular material properties (bead diameter, paraffin content as well as the dimension of the sample for the meso-scale tensile tests. We finally propose a discusion on: (i) the relationship between the microscopic and macroscopic cohesion forces relying on classical homogenisation laws ; (ii) the potential impact of size effects based on a simple phenomenological model.
A video is available at https://doi.org/10.48448/33p9-3x96
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
