RELATIONS BETWEEN THE STRUCTURE AND MECHANICAL PROPERTIES OF ASPHALTIC CONCRETE

DETAILS ARE GIVEN OF INVESTIGATIONS INTO THE STRUCTURAL AND MECHANICAL PROPERTIES OF ASPHALTIC CONCRETE, IN PARTICULAR THE INFLUENCE OF THE STRUCTURE AND COMPOSITION ON THE MODULUS OF ELASTICITY AND COEFFICIENT OF VISCOSITY. THE MODULUS WAS DETERMINED BY MEANS OF THE TRIAXIAL COMPRESSION TEST; THE POYNTING RHEOLOGICAL MODEL WAS USED TO DEFINE THE VISCOSITY OF THE MIXTURE. VARIATIONS IN THE PROPORTION OF COARSE ELEMENTS HAVE TWO CONTRARY EFFECTS: THE FORMATION OF A GRANULAR FRAMEWORK INCREASES THE MODULUS OF ELASTICITY AND VISCOSITY WHILE THE INCREASE IN THE THICKNESS OF THE FILM HAS THE OPPOSITE EFFECT. THE OPTIMUM IN QUANTITY OF COARSE AGGREGATES IS APPROXIMATELY 40 TO 50 PER CENT. THE BITUMEN CONTENT ALSO PLAYS A PART; WHEN THIS CONTENT IS MODIFIED FOR A GIVEN BITUMEN, THE VISCOSITY OF THE MIXTURE GOES THROUGH A MAXIMUM. VARIATIONS IN THE VISCOSITY OF THE BINDER ITSELF INFLUENCE THE VISCOSITY OF THE MIXTURE. A STUDY WAS ALSO MADE OF THE EFFECT OF TEMPERATURE ON THE MODULUS AND VISCOSITY. /TRRL/

  • Corporate Authors:

    Mat Veses Mezh Nauchno-tekh Konf /Ussr

    ,    
  • Authors:
    • ZOLOTAREV, V A
  • Publication Date: 1968

Language

  • English

Media Info

  • Features: Figures; Tables;
  • Pagination: p. 151-4

Subject/Index Terms

Filing Info

  • Accession Number: 00211281
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: Jan 11 1974 12:00AM