HOT RUBBER-ASPHALT SEAL COATS TO CURE CRACKING STREETS

A 1966 ARTICLE BY MCDONALD REPORTED SEVERAL SMALL-SCALE APPLICATIONS OF AN APPROACH TO ALLIGATORING IN WHICH HIGH PERCENTAGES OF RUBBER WERE EMPLOYED IN ASPHALT TO PROVIDE A CEMENTING AGENT FOR CHIP SEAL COATS OR RESURFACING OF ASPHALT PAVEMENTS OVER ELASTIC SUBGRADES OR BASES. THE INNOVATION PRODUCED A HIGHLY ELASTIC MEMBRANE TOLERATING HIGH PAVEMENT DEFLECTIONS WITHOUT CRACKING. THE PRESENT ARTICLE DESCRIBES LARGE-SCALE APPLICATION OF THE METHOD TO THE RESURFACING OF MANY MILES OF OLDER STREETS IN PHOENIX, ARIZONA. SINCE THE RUBBER IS GROUND FROM THE TREADS OF OLD TIRES THE METHOD OFFERS CERTAIN ECOLOGICAL BENEFITS: OVER 100 MILLION TIRES A YEAR ARE THROWN AWAY, CONSTITUTING ABOUT A MILLION TONS OF SOLID WASTE THAT COULD BE RECYCLED. A CONSTRAINT ON THE METHOD IS THAT IT CANNOT BE USED WHEN AMBIENT AND PAVEMENT TEMPERATURES ARE BELOW 70 AND 85 F, RESPECTIVELY. GRADING, PROCESSING, AND PLACING ARE DESCRIBED BRIEFLY.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1606878
• Authors:
  • Stokely
  • Mcdonald, C H
• Publication Date: 1972-7

Media Info

• Features: Photos; Tables;
• Pagination: p. 46-8
• Serial:
  • Public Works
  • Volume: 103
  • Issue Number: 7
  • Publisher: Hanley Wood
  • ISSN: 0033-3840
  • Serial URL: http://www.pwmag.com

Subject/Index Terms

• TRT Terms: Alligator cracking; Asphalt; Elastomer modified asphalt; Resurfacing; Rubber; Seal coats; Tires
• Old TRIS Terms: Alligatoring
• Subject Areas: Highways; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 00211764
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 30 1973 12:00AM