Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloThe measure of friction angles for different types of granular material
Anno di pubblicazione2019
Formato
  • Elettronico
  • Cartaceo
Autore/iAndrea Maria Deganutti, Pia Rosella Tecca, Rinaldo Genevois
Affiliazioni autoriCNR-IRPI Padova, Italy Department of Geosciences, University of Padova, Padova, Italy
Autori CNR e affiliazioni
  • ANDREA MARIA DEGANUTTI
  • PIA ROSELLA TECCA
Lingua/e
  • inglese
AbstractThe aim of this research is to deepen the knowledge of the role of friction on the dynamics of granular media; in particular the friction angle is taken into consideration as the physical parameter that drives stability, motion and deposition of a set of grains of any nature and size. The idea behind this work is a question: is the friction angle really that fundamental and obvious physical parameter which rules stability and motion of granular media as it seems from most works which deal with particle dynamics? The experimental study tries to answer this question with a series of laboratory tests, in which different natural and artificial granular materials have been investigated in dry condition by means of a tilting flume. The characteristic friction angles, both in deposition (repose) and stability limit (critical) conditions, were measured and checked against size, shape, density and roughness of the considered granular material. The flume tests have been preferred to "classical" geotechnical apparatuses (e.g. shear box) since the flume experimental conditions appear closer to the natural ones of many situations of slope stability interest (e.g. a scree slope). The results reveal that characteristic friction angles depend on size and shape of grains while mixtures of granules of different size show some sorting mechanism with less clear behaviour.
Lingua abstractinglese
Altro abstract-
Lingua altro abstract-
Pagine da769
Pagine a777
Pagine totali8
RivistaJournal of mountain science (Online)
Attiva dal 2003
Editore: Springer - Beijing
Paese di pubblicazione: Cina
Lingua: inglese
ISSN: 1993-0321
Titolo chiave: Journal of mountain science (Online)
Titolo proprio: Journal of mountain science. (Online)
Titolo abbreviato: J. mt. sci. (Online)
Numero volume della rivista16
Fascicolo della rivista4
DOI10.1007/s11629-018-5329-z
Verificato da refereeSì: Internazionale
Stato della pubblicazionePublished version
Indicizzazione (in banche dati controllate)-
Parole chiaveRheology, Granular material, Friction angle, Deposition process, Yielding process
Link (URL, URI)-
Titolo parallelo-
Licenza-
Scadenza embargo-
Data di accettazione-
Note/Altre informazioni-
Strutture CNR
  • IRPI — Istituto di ricerca per la protezione idrogeologica
Moduli/Attività/Sottoprogetti CNR
  • DTA.AD003.067.001 : Reologia dei processi geologici
Progetti Europei-
Allegati
The measure of friction angles for different types of granular material
Descrizione: Versione pubblicata dell'articolo
Tipo documento: application/pdf