Effect of Coarse Particle Volume Fraction on the Yield Stress of Muddy Sediments from Marennes Oleron Bay

Type Article
Date 2010
Language English
Author(s) Pantet A.1, Robert SergeORCID2, Jarny S.3, Kervella Stephane2
Affiliation(s) 1 : Univ Havre, LOMC, FRE CNRS 3102, F-76058 Le Havre, France.
2 : IFREMER, LERPC, F-17137 Lhoumeau, France.
3 : Univ Poitiers, LEA, UMR CNRS 6609, F-86962 Futuroscope, France.
Source Advances In Materials Science And Engineering (1687-6822) (Hindawi Publishing Corporation), 2010 , Vol. 2010 , P. 1-6
DOI 10.1155/2010/245398
WOS© Times Cited 5
Abstract Coastal erosion results from a combination of various factors, both natural and humaninduced, which have different time and space patterns. In addition, uncertainties still remain about the interactions of the forcing agents, as well as on the significance of non-local causes of erosion. We focused about the surface sediments in the Marennes Oleron bay, after a general description of the site that has many various activities. The superficial sediments show a mechanical behavior, mainly depends on the fine fraction for a composition that contains up to 60% of sandy material. Fine sediments fraction has a typical yield stress depending naturally of concentration or water content. This yield could be modified slightly or significantly by adding silt or sand. As a result, the rheological measurement sensitivity allows us to characterize five typical sediments that correlate with solid fraction and fine fraction.
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