Compaction Dynamlics of Wet Granular Assemblies

[en] The extremely slow compaction dynamics of wet granular assemblies is studied experimentally. The cohesion, due to capillary bridges between neighboring grains, is tuned using different liquids having speciﬁc surface tension values. The compaction dynamics of a cohesive packing obeys an inverse logarithmic law, like most dry random packings. However, the characteristic relaxation time 􏰌 grows strongly with cohesion. A model, based on free volume kinetic equations and the presence of a capillary energy barrier, is able to reproduce quantitatively the experimental curves.

Disciplines :

Physics

Author, co-author :

Fiscina, J. E.

Lumay, Geoffroy ; Université de Liège - ULiège > Département de physique > Physique statistique

Ludewig, François ; Université de Liège - ULiège > Département de physique > Physique statistique

Vandewalle, Nicolas ; Université de Liège - ULiège > Département de physique > Physique statistique

Language :

English

Title :

Compaction Dynamlics of Wet Granular Assemblies

Publication date :

July 2010

Journal title :

Physical Review Letters

ISSN :

0031-9007

eISSN :

1079-7114

Publisher :

American Physical Society, Ridge, United States - New York

Volume :

105

Pages :

048001

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 30 August 2010

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