Aging of a granular pile induced by thermal cycling
Abstract
Here we show that variations of temperature, even of a few degrees in amplitude, induce the ageing of a granular pile. In particular, we report measurements of physical properties of a granular heap submitted to thermal cycles. Namely, we focus on the evolution of the thermal linear-expansion coefficient and of the thermal conductivity of the pile with the number of cycles. The present contribution nicely supplements a recent article we published elsewhere [Phys. Rev. Lett. 101, 148303 (2008)] and introduces a different and promising method to impose temperature cycles to a granular pile.
- Publication:
-
Powders and Grains 2009
- Pub Date:
- June 2009
- DOI:
- 10.1063/1.3179965
- arXiv:
- arXiv:0906.0452
- Bibcode:
- 2009AIPC.1145..473D
- Keywords:
-
- 45.70.-n;
- 72.15.Cz;
- 62.20.Hg;
- Granular systems;
- Electrical and thermal conduction in amorphous and liquid metals and alloys;
- Creep;
- Condensed Matter - Soft Condensed Matter;
- Condensed Matter - Materials Science
- E-Print:
- 4 pages, 5 figures, Proceeding of the Powders and Grains conference 2009, Golden (Colorado)