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2006-05-30 - Colloque/Article dans les actes avec comité de lecture - Anglais - page(s)

Dagrain Fabrice , Richard Thomas, Germay C., "The rock stregnth device: a scratching apparatus to determine rock properties" in 7th National Congress on Theoretical and Applied Mechanics, Mons, Belgique, 2006

  • Codes CREF : Mécanique appliquée générale (DI2100), Bâtiments génie civil transports (DI2600)
  • Unités de recherche UMONS : Génie civil et Mécanique des Structures (F801)
Texte intégral :

Abstract(s) :

(Anglais) The present paper presents a portable apparatus, the Rock Strength Device (RSD), and the methodology to assess mechanical properties of cohesive granular material from "partially-destructive" scratching tests with rectangular cutters (the material surface is just scratched at shallow depth). A correlation between the intrinsic specific energy (measured in the scratch test) and the uniaxial compressive strength has been built on more than 200 rock samples, and a correlation between the friction angle at the wear flat/rock interface and the internal friction angle of the material is given for 20 different rocks. The test provides also a “continuous” log of the material properties along the groove with a wide range of practical applications.