THE PURPOSE OF FULL-DEPTH ASPHALT PAVEMENT STRUCTURES AND BASIS FOR THICKNESS DESIGN OF THESE STRUCTURES

AFTER A SURVEY OF THE FACTORS DETERMINING THE LOADSPREADING CAPACITY OF A BITUMINOUS BOUND BASE IT IS SHOWN THAT THE CONTENT OF MINERAL AGGREGATE, EXPRESSED IN VOLUME PER CENT AND THE HARDNESS OF THE BINDER, HAVE GREAT INFLUENCE ON THE STIFFNESS OF A FULL-DEPTH PAVEMENT. THE STRAIN WHICH CAN BE TOLERATED, WHEN FATIGUE CRACKING IS TO BE AVOIDED, DEPENDS MAINLY UPON THE BINDER CONTENT, LIKEWISE EXPRESSED IN VOLUME PERCENT. IT IS SHOWN THAT IN THE SPRING, WHEN THE SUBGRADE HAS A MINIMUM BEARING CAPACITY, THE FULL-DEPTH PAVEMENT HAS A LARGE LOAD SPREADING CAPACITY, THEREBY REDUCING THE PRESSURE ON THE SUBGRADE TO A MUCH LOWER VALUE THAN FOUND UNDER TRADITIONAL PAVEMENT CONTAINING UNBOUND MATERIALS. FINALLY, IT IS SHOWN THAT UNDER PREVAILING CLIMATIC CONDITIONS, THE AMOUNT OF DIFFERENTIAL FROST HEAVE WILL NOT BE GREATER WITH FULL-DEPTH THAN WITH A TRADITIONAL UNBOUND PAVEMENT.

  • Corporate Authors:

    Astalt

    ,    
  • Authors:
    • Kirk, J M
  • Publication Date: 1972-5

Media Info

  • Features: Figures; References;
  • Serial:
    • Volume: 39 N
    • Issue Number: n-15

Subject/Index Terms

Filing Info

  • Accession Number: 00206141
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: Jul 31 1974 12:00AM