Sand – rubber mixtures submitted to isotropic loading: a minimal model
1 LUNAM Université, IFSTTAR, MAST, GPEM, F-44340 Bouguenais, France
2 GeM (Institut de recherche en génie civil et mécanique), CNRS UMR 6183, École Centrale de Nantes, F-44321 Nantes, France
3 Department of Civil Engineering, University of Bristol. Bristol, BS8 1TR, UK
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Published online: 30 June 2017
The volume of scrap tyres, an undesired urban waste, is increasing rapidly in every country. Mixing sand and rubber particles as a lightweight backfill is one of the possible alternatives to avoid stockpiling them in the environment. This paper presents a minimal model aiming to capture the evolution of the void ratio of sand-rubber mixtures undergoing an isotropic compression loading. It is based on the idea that, submitted to a pressure, the rubber chips deform and partially fill the porous space of the system, leading to a decrease of the void ratio with increasing pressure. Our simple approach is capable of reproducing experimental data for two types of sand (a rounded one and a sub-angular one) and up to mixtures composed of 50% of rubber.
© The Authors, published by EDP Sciences, 2017
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.