Transition Behavior in Silicone-coated Sand Mixtures

Granular media with a small amount of liquid possess a significant stiffness caused by interactions or capillary bridges compared to the same system when dry. Recently, another type of interacting sand where each grain is coated by silicone-oil is produced. However, macroscopic physical properties o...

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Bibliographic Details
Published in:Journal of the Physical Society of Japan 2021-03, Vol.90 (3), p.33801
Main Authors: Tani, Marie, Fujio, Honoka, Kurita, Rei
Format: Article
Language:English
Subjects:
Coating
Granular materials
Granular media
Physical properties
Sand
Silicone resins
Silicones
Stiffness
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Summary:Granular media with a small amount of liquid possess a significant stiffness caused by interactions or capillary bridges compared to the same system when dry. Recently, another type of interacting sand where each grain is coated by silicone-oil is produced. However, macroscopic physical properties of such systems are not yet understood. In this work, we mixed the silicone-coated sand to uncoated one, and examined the static properties of the interacting composite granular system with three independent experiments. We then observed a characteristic transition of macroscopic behaviors by changing the fraction of coated sand. This work can advance our fundamental understandings of interacting granular systems.
ISSN:0031-9015
1347-4073
DOI:10.7566/JPSJ.90.033801