| Issue |
La Houille Blanche
Number 2, Avril 2007
150e anniversaire des crues de 1856
|
|
|---|---|---|
| Page(s) | 85 - 93 | |
| DOI | https://doi.org/10.1051/lhb:2007023 | |
| Published online | 15 May 2007 | |
Effets de la densité et de la structuration sur les caractéristiques rhéologiques de la vase
Density and structural effects on the rheological characteristics of mud
1
CETMEF, EDF R&D/LNHE Equipe Commune de Recherche EDF-CETMEF, 6 quai Watier BP 49, Bat K, F-78401 Chatou
2
Institut Navier, LMSGC (UMR 113 LCPC-ENPC-CNRS), 2 allée Képler, F-77420 Champs sur Marne
Auteurs de correspondance : damien.pham-van-bang@edf.fr ovarlez@lcpc.fr laurent.tocquer@lcpc.fr
Abstract
The fine sediments rheology presents generally a complex fluid behaviour with non linear and time dependent properties. In this paper, some aspects of the non linearity of a port cohesive sediment behaviour are experimentally investigated. The effect of the density on the yield stress and on the viscosity is first described. Then creep tests are realized in order to highlight the viscosity bifurcation phenomena. Finally, the aging effect is highlighted.
Key words: Rhéologie
© Société Hydrotechnique de France, 2007