CHARACTERIZATION OF ASPHALT CONCRETE AND CEMENT-TREATED GRANULAR BASE COURSE

IN THE CONTEXT OF THE AVAILABLE METHODS OF STRUCTURAL DESIGN, LINEAR ELASTICITY AND VISCOELASTICITY CAN ADEQUATELY CHARACTERIZE ASPHALT CONCRETE PROVIDED THAT CHARACTERISTICS NOT MODELLED BY THE CHOSEN CONSTITUTIVE LAW ARE RECOGNIZED. STRESS NONLINEARITIES CAN BE PARTIALLY ACCOUNTED FOR IF THE AVERAGE STRESS STATE EXPECTED IS USED WHEN SELECTING THE APPROPRIATE LINEAR ELASTIC AND VISCOELASTIC PARAMETERS. FOR AN ELASTIC CHARACTERIZATION, IF THE EFFECTS OF LOAD DURATION, TEMPERATURE AND PERMANENT DEFORMATION ARE INCLUDED, THE STRESS-STRAIN PREDICTIONS SHOULD BE COMPARABLE TO THOSE OBTAINED USING LINEAR VISCOELASTICITY AND THERMORHEOLOGIC MODELS. HOWEVER, IT IS PREFERABLE TO DIRECTLY MODEL AS MANY OF THE RESPONSE CHARACTERISTICS AS POSSIBLE, AND THEREFORE, FUTURE WORK SHOULD BE DIRECTED TOWARDS UTILIZING LINEAR VISCOELASTICITY. DISTRESS CRITERIA WHICH CONSIDER ASPHALT CONCRETE AS A VISCOELASTIC MATERIAL NEED TO BE DEVELOPED. /AUTHOR/

  • Corporate Authors:

    Materials Research & Development

    ,    

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Nair, K
    • Smith, W S
    • Chang, C Y
  • Publication Date: 1972-2

Media Info

  • Pagination: 159 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00210478
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Files: TRIS, USDOT
  • Created Date: Jun 28 1972 12:00AM