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Pillitteri S, Opsomer E, Lumay G, et al. How size ratio and segregation affect the packing of binary granular mixtures. Soft Matter. 2020;doi: 10.1039/d0sm00939c.
Pillitteri, S., Opsomer, E., Lumay, G., & Vandewalle, N. (2020). How size ratio and segregation affect the packing of binary granular mixtures. Soft matter, . https://doi.org/10.1039/d0sm00939c
Pillitteri, Salvatore, et al. "How size ratio and segregation affect the packing of binary granular mixtures." Soft matter vol. (2020). doi: https://doi.org/10.1039/d0sm00939c
Pillitteri S, Opsomer E, Lumay G, Vandewalle N. How size ratio and segregation affect the packing of binary granular mixtures. Soft Matter. 2020 Sep 11; doi: 10.1039/d0sm00939c. Epub 2020 Sep 11. PMID: 32914151.
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Soft Matter. 2020 Sep 11; doi: 10.1039/d0sm00939c. Epub 2020 Sep 11.

How size ratio and segregation affect the packing of binary granular mixtures.

Soft matter

Salvatore Pillitteri, Eric Opsomer, Geoffroy Lumay, Nicolas Vandewalle

Affiliations

  1. Quartier Agora, allée du six Août 19, Liège, Belgium. [email protected].

PMID: 32914151 DOI: 10.1039/d0sm00939c

Abstract

For reaching high packing fractions, grains of various sizes are often mixed together allowing the small grains to fill the voids created by the large ones. However, in most cases, granular segregation occurs leading to lower packing fractions. We performed a wide set of experiments with different binary granular systems, proving that two main parameters are respectively the volume fraction f of small beads and the grain size ratio α. In addition, we show how granular segregation affects the global packing fraction. We propose a model with a strong dependency on α that takes into account possible granular segregation. Our model is in good agreement with both earlier experimental and simulation data.

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