THE DYNAMIC MODULUS OF ASPHALT CONCRETE SURFACES /IN DANISH/

A THREE POINT BENDING MACHINE HAS BEEN USED AT THE TECHNICAL UNIVERSITY OF DENMARK FOR DETERMINING THE STIFFNESS OF ASPHALT CONCRETE OVER A WIDE RANGE OF TEMPERATURES AND FREQUENCIES. A TEMPERATURE RANGE OF -20C THROUGH +50C AND A FREQUENCY RANGE OF 3.01 CPS TO 100 CPS ARE EMPLOYED. A MASTER CURVE IS DRAWN FOR A MAXIMUM OUTER FIBER STRAIN OF 30 MICRONS. AN INCREASE IN STRAIN SHOWS DECREASE IN STIFFNESS, WITH THE RATE OF DECREASE BEING GREATEST FOR THE LOWER FREQUENCIES. REASONABLE RESULTS ARE SHOWN FOR THE CHANGE IN PHASE ANGLE OVER THE ABOVE RANGE OF TEMPERATURES AND FREQUENCIES. CALCULATIONS WERE ALSO MADE WITH VAN DER POEL'S NOMOGRAPH AND HEUKELOM AND KLOMP'S FOR DETERMINING ASPHALT CONCRETE MIX STIFFNESS FROM ASPHALT PROPERTIES AND MIX PROPORTIONS. THESE RESULTS ARE ILLUSTRATED WITH REASONABLE CORRELATION TO THE MASTER CURVE, IN PARTICULAR AT TEMPERATURES UNDER 30C. /AUTHOR/

  • Availability:
  • Supplemental Notes:
    • Vol 47, No 12, PP 221-225
  • Authors:
    • Bohn, A O
    • Ullidtz, P
    • Stubstad, R
  • Publication Date: 1970

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00213866
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 25 1971 12:00AM