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Confrontation et analyse d'érodimètres et caractérisation de la sensibilité à l'érosion d'interface.

Abstract : A bibliographical review is proposed for the problem of erosion and its "measurement". A comparative study is carried out with two erodimeters (JET/HET) on natural soil samples, compacted with the Proctor protocol. The obtained values with the litterature methods, considering identical mechanism, are dependent on the used device. An energy approach between the fluid and the soil is built for the two devices. For a same eroded weight, the expended energies are similar. Two scales of energy appears for a same eroded weight. A new erosion resistance index based on energy and eroded mass links the two tests on a same scale. A statistical analysis is carried out. It gives an expression of the erosion resistance index in some physical parameters near the Proctor optimum. A study concerning the variation observed on the soil "erodibility" from the dry side to the wet side shows the influence of the saturation degree. In addition, a relationship between the permeability and the erosion resistance index is pointed out.
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https://tel.archives-ouvertes.fr/tel-00738460
Contributor : Pierre-Louis Regazzoni Connect in order to contact the contributor
Submitted on : Sunday, October 7, 2012 - 11:46:29 AM
Last modification on : Wednesday, April 27, 2022 - 4:42:00 AM
Long-term archiving on: : Tuesday, January 8, 2013 - 2:50:12 AM

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  • HAL Id : tel-00738460, version 1

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P.L. Regazzoni. Confrontation et analyse d'érodimètres et caractérisation de la sensibilité à l'érosion d'interface.. Matériaux. Université de Nantes, 2009. Français. ⟨tel-00738460⟩

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