BREAKING DOWN OF PARTICLES IN A STOCKPILE OF AGGREGATES UNDER REALISTIC STRESSES

ATTRITION DES DEBLAIS SOUS L'EFFET DE SOLLICITATIONS PROCHES DU TRAFIC

IT IS DIFFICULT AND COSTLY TO CONDUCT FULL-SCALE STUDIES OF THE BEHAVIOUR OF AGGREGATES PLACED WITHOUT BINDER. THE AUTHOR HAS DEVELOPED AN EXPERIMENTAL SMALL-SCALE DEVICE, THE DIMENSIONS OF WHICH CORRESPOND TO THE INFLUENCE ZONE OF A TYRE ON THE PAVEMENT. THIS DEVICE COMPRISES A CONTAINER WITH A FLEXIBLE BOTTOM IN WHICH TO PLACE AGGREGATES, THE INITIAL CHARACTERISTICS OF WHICH ARE KNOWN (GRADING CURVE, FRAGMENTATION INDEX). THE AGGREGATES ARE SUBJECTED TO PRESSURES AND SHEAR STRESSES THROUGH MOBILE PLATES SUBMITTED TO VARIABLE ALTERNATE PRESSURES. DURING TRAFFIC OR EXPERIMENTAL STRESSES, THE AGGREGATES ARE FAIRLY EXTENSIVELY CRUSHED. THEIR GRADING CURVE ALTERS. THE AUTHOR PROVES THAT THIS MODIFICATION IS DIRECTLY RELATED TO THE INDEX OF FRAGMENTATION OF THE AGGREGATES. THE ORIGINAL ARTICLE WAS PUBLISHED IN: DIE NATURSTEIN INDUSTRIE, BADEN-BADEN, GERMANY, BR, 1977, NO 6, PP 15-20, UNDER THE TITLE: ZUR FRAGE DER KORNVERFEINERUNG EINES GESTEINSHAUFWERKS UNTER PRAXISNAHER BEANSPRUCHUNG.

  • Authors:
    • SCHREIBER, F R
  • Publication Date: 1979-1

Language

  • French

Media Info

  • Pagination: 17P
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01295386
  • Record Type: Publication
  • Source Agency: Institut Francais des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)
  • Files: ITRD
  • Created Date: Nov 21 2010 5:00AM