Documents disponibles écrits par cet auteur

Energy-based method for providing soil surface erodibility rankings / Didier Marot in Journal of geotechnical and geoenvironmental engineering, Vol. 137 N° 12 (Décembre 2011) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 137 N° 12 (Décembre 2011) . - pp. 1290-1293 Titre : Energy-based method for providing soil surface erodibility rankings Type de document : texte imprimé Auteurs : Didier Marot, Auteur ; Pierre-Louis Regazzoni, Auteur ; Tony Wahl, Auteur Année de publication : 2012 Article en page(s) : pp. 1290-1293 Note générale : Géotechnique Langues : Anglais (eng) Mots-clés : Dams  Embankment  Soil  surface  erosion  Laboratory  testing  Erosion  models  Energy Résumé : The jet erosion test (JET) and the hole erosion test (HET) are two tests used to determine soil erodibility classification, and results are commonly interpreted by two distinct methods. A new method based on fluid energy dissipation and on measurement of the eroded mass for interpreting the two tests is proposed. Different fine-grained soils, covering a large range of erodibility, are tested. It is shown that, by using common methods, the erosion coefficient and average critical shear stress are different with the JET and with the HET. Moreover, the relative soils classifications yielded by the two erodimeters are not exactly the same. On the basis of the energy method, an erosion resistance index is determined for both apparatuses, and a classification of surface-erosion resistance is proposed. For both apparatuses, values of the erosion resistance index are roughly the same for each soil, and a single classification of soil erodibility is obtained. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v137/i12/p1290_s1?isAuthorized=no [article] Energy-based method for providing soil surface erodibility rankings [texte imprimé] / Didier Marot, Auteur ; Pierre-Louis Regazzoni, Auteur ; Tony Wahl, Auteur . - 2012 . - pp. 1290-1293. Géotechnique Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 137 N° 12 (Décembre 2011) . - pp. 1290-1293 Mots-clés : Dams  Embankment  Soil  surface  erosion  Laboratory  testing  Erosion  models  Energy Résumé : The jet erosion test (JET) and the hole erosion test (HET) are two tests used to determine soil erodibility classification, and results are commonly interpreted by two distinct methods. A new method based on fluid energy dissipation and on measurement of the eroded mass for interpreting the two tests is proposed. Different fine-grained soils, covering a large range of erodibility, are tested. It is shown that, by using common methods, the erosion coefficient and average critical shear stress are different with the JET and with the HET. Moreover, the relative soils classifications yielded by the two erodimeters are not exactly the same. On the basis of the energy method, an erosion resistance index is determined for both apparatuses, and a classification of surface-erosion resistance is proposed. For both apparatuses, values of the erosion resistance index are roughly the same for each soil, and a single classification of soil erodibility is obtained. DEWEY : 624.1 ISSN : 1090-0241 En ligne : http://ascelibrary.org/gto/resource/1/jggefk/v137/i12/p1290_s1?isAuthorized=no

Investigation of interface erosion rate by Jet Erosion Test and statistical analysis / Pierre-Louis Regazzoni in European journal of environmental and civil engineering, Vol. 15 N° 8 (Août 2011) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 15 N° 8 (Août 2011) . - pp. 1167-1185 Titre : Investigation of interface erosion rate by Jet Erosion Test and statistical analysis Titre original : Analyse de la vitesse d'érosion d'interface par Jet Erosion Test et analyse statistique Type de document : texte imprimé Auteurs : Pierre-Louis Regazzoni, Auteur ; Didier Marot, Auteur Année de publication : 2012 Article en page(s) : pp. 1167-1185 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Soil  erosion  JET  Cohesive  soils  Energy  Statistical  analysis  Water  flow  Dynamic  compaction Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Erosion is one of the main causes of instabilities within hydraulic earth structures. Two types of erosion can be distinguished: suffusion and interface erosion. This paper deals with the interface erosion phenomenon and the Jet Erosion Test is used in order to evaluate the erodibility of fine soils. A new energy analysis of the test is developed, relating the total eroded mass to the dissipated fluid energy. A new erosion resistance index is proposed. The erodibility is evaluated for twelve natural soil specimens which are compacted with the Proctor protocol. They represent a large range of erosion sensitivity. A wide dissipated hydraulic energy scale appears and a statistical analysis is carried out which gives a correlation of the erosion resistance index with three physical parameters. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16706 [article] Investigation of interface erosion rate by Jet Erosion Test and statistical analysis = Analyse de la vitesse d'érosion d'interface par Jet Erosion Test et analyse statistique [texte imprimé] / Pierre-Louis Regazzoni, Auteur ; Didier Marot, Auteur . - 2012 . - pp. 1167-1185. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 15 N° 8 (Août 2011) . - pp. 1167-1185 Mots-clés : Soil  erosion  JET  Cohesive  soils  Energy  Statistical  analysis  Water  flow  Dynamic  compaction Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Erosion is one of the main causes of instabilities within hydraulic earth structures. Two types of erosion can be distinguished: suffusion and interface erosion. This paper deals with the interface erosion phenomenon and the Jet Erosion Test is used in order to evaluate the erodibility of fine soils. A new energy analysis of the test is developed, relating the total eroded mass to the dissipated fluid energy. A new erosion resistance index is proposed. The erodibility is evaluated for twelve natural soil specimens which are compacted with the Proctor protocol. They represent a large range of erosion sensitivity. A wide dissipated hydraulic energy scale appears and a statistical analysis is carried out which gives a correlation of the erosion resistance index with three physical parameters. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16706