THE USE OF FLYASH AS FILLER IN ASPHALTIC CONCRETE PRODUCTION IN NEW SOUTH WALES

IN THE PRODUCTION OF ASPHALTIC CONCRETE FOR ROAD CONSTRUCTION, A FILLER MATERIAL IS USUALLY REQUIRED TO PROVIDE A DENSE AND STABLE MIXTURE. LIMESTONE DUST WAS GENERALLY APPLIED AS FILLER IN NEW SOUTH WALES UNTIL THE DEPARTMENT OF MAIN ROADS HAD EXPERIMENTED WITH AND SUBSEQUENTLY ADOPTED THE USE OF FLYASH, AN INDUSTRIAL WASTE, AS ITS SUBSTITUTE. THIS PAPER DESCRIBES AN INVESTIGATION CARRIED OUT AT THE DEPARTMENT'S CENTRAL TESTING LABORATORY WHICH ESTABLISHES IN PRINCIPLE THAT FLYASH MAY BE USED AS FILLER IN ASPHALTIC CONCRETE TO REPLACE THE MORE EXPENSIVE LIMESTONE DUST. HOWEVER, THE PRESENCE OF CLINKERS AND FURNACE DEBRIS IN THE FLYASH FROM PYRMONT POWER STATION POSED A DIFFICULT PROBLEM IN HANDLING OF THE MATERIAL. AFTER A SERIES OF EXPERIMENTS A DEVICE WAS DESIGNED WHICH EFFICIENTLY FILTERED OFF THE UNDESIRABLE CLINKERS AND DEBRIS THEREBY ENABLING THE PRACTICAL UTILIZATION OF FLYASH IN THE DEPARTMENT'S ROSEHILL HOTMIX PLANT. AS A RESULT OF THE CHANGEOVER IN 1962, THE SAVINGS TO THE DEPARTMENT AMOUNT TO APPROMIMATELY $70,000 P.A. /AUTHOR/

• Record URL:
  • http://arrbknowledge.com
• Supplemental Notes:
  • Vol 4, Pt 2, PAPER NO 481, PP 1554-1561, 3 FIG, 4 TAB, 2 REF
• Corporate Authors:

  ARRB

  Melbourne, Victoria  Australia 
• Authors:
  • FUNG, K Y
  • Dickinson, E J
  • Brummelaar, T T
  • Martin, K G
• Conference:
  • Australian Road Research Board Conference Proc
• Publication Date: 1968

Media Info

• Serial:
  • Volume: 4
  • Issue Number: Pt1

Subject/Index Terms

• TRT Terms: Asphalt concrete; Clinkers; Economics; Fillers (Materials); Filters; Fly ash; Limestone dust; Materials management; Road construction
• Subject Areas: Economics; Highways; Materials;

Filing Info

• Accession Number: 00211492
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Sep 14 1970 12:00AM