PREPARING FOR THE JUMBO JETS "DOWN UNDER"

THE TREND TOWARD LARGER AIRCRAFT CAUSED EXPANSION OF SYDNEY'S AIRPORT FACILITIES, NECESSITATING SUBSTANTIAL RECLAMATION INTO BOTANY BAY. A FLEXIBLE PAVEMENT WAS DECIDED UPON AS MOST SUITABLE TO COVER THE SAND FILL DREDGED FROM BOTANY BAY. THE MIX DESIGN SPECIFICATION CALLED FOR TWO BASIC MIXES, ONE TO BE USED ON THE CENTRAL RUNWAY, AND THE SECOND TYPE FOR SURFACING BLAST AREAS, RUNWAY FLANKS AND TAXIWAY SHOULDERS. THE AIM WAS TO PROVIDE A PARTICULARLY DURABLE TYPE OF MIX WITH INCREASED BITUMEN FILM THICKNESS ON AREAS WHERE TRAFFIC WOULD BE AT AN ABSOLUTE MINIMUM. ACCEPTANCE CONTROL TESTING WAS CONDUCTED AT THE MIXING PLANT USING A MECHANICAL MARSHALL COMPACTION MACHINE FOR QUALITY CONTROL. IT WAS SPECIFIED THAT THREE PAVERS BE OPERATED IN ECHELON TO MINIMIZE COLD LONGITUDINAL JOINTS OVER THE PROBABLE WHEEL PATH. ALL PAVERS USED WERE REQUIRED TO BE EQUIPPED WITH AUTOMATIC LEVEL CONTROL DEVICES. THE SPECIFICATION REQUIRED AT LEAST 97% OF MARSHALL DENSITY. MULTI-TIRED RUBBER ROLLERS AND A THREE-WHEELED STEEL ROLLER WERE USED FOR COMPACTION.

  • Supplemental Notes:
    • pp 13-15, 1 FIG, 4 PHOT
  • Corporate Authors:

    National Asphalt Pavement Association (NAPA)

    5100 Forbes Boulevard
    Lanham, Maryland  United States  20706
  • Publication Date: 1970-1

Subject/Index Terms

Filing Info

  • Accession Number: 00211472
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 2 1970 12:00AM