Sand - rubber mixtures undergoing isotropic loading: derivation and experimental probing of a physical model

Auriane Platzer, Salman Rouhanifar, Patrick Richard, Bogdan Cazacliu, Erdin Ibraim

Research output: Contribution to journalArticle (Academic Journal)peer-review

8 Citations (Scopus)
304 Downloads (Pure)

Abstract

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 shed light on the relevant physical parameters governing the evolution of the void ratio of sand-rubber mixtures undergoing an isotropic compression loading, where the mixtures consist of various volume ratios of rubber. It is based on the idea that, when pressure is applied, the rubber particles deform and partially fill the porous space of the system, leading to a decrease of the void ratio with increasing pressure. We show that our simple approach is capable of reproducing experimental data obtained with sand and rubber of similar particle size distributions up to mixtures composed of 50% of rubber. The effect of the particle shape and size on the model parameters is discussed.
Original languageEnglish
Article number81
Number of pages10
JournalGranular Matter
Volume20
Issue number4
Early online date3 Nov 2018
DOIs
Publication statusPublished - Nov 2018

Keywords

  • Sand
  • Rubber particle
  • Mixture
  • Isotropic loading
  • Experiment
  • Modelling

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