REPROCESSED TIRES TO EXTEND PAVEMENT LIFE

A MIXTURE OF 25 PERCENT GRANULATED RUBBER RECYCLED FROM OLD TIRES AND 75 PERCENT PAVING ASPHALT WILL BE USED ON A 7.5 MILE STRETCH OF HIGHWAY IN A RESEARCH EFFORT DESIGNED TO PROLONG THE LIFE OF EXISTING PAVEMENTS. THE RESURFACING MIX WILL ALSO FEATURE A LIGHTWEIGHT SYNTHETIC AGGREGATE WHICH WILL NOT BREAK WINDSHIELDS. THE AGGREGATE IS HEAT-EXPANDED SHALE HAVING ABOUT HALF THE DENSITY OF CONVENTIONAL AGGREGATES. THE RUBBER GRANULES ARE LIQUEFIED AT A TEMPERATURE OF 400- DEGREES AND THE RESULTING RUBBER-ASPHALT-AGGREGATES MIXTURE IS APPLIED HOT TO THE TORN PAVEMENT SURFACE. PREVIOUS EXPERIMENTS USING AN EMULSIFIER WHICH INCLUDES 5 PERCENT LIQUID LATEX AND MAY BE APPLIED COLD HAVE GIVEN GOOD RESULTS IN BINDING SEVERELY CRACKED PAVING. SIMILAR RESURFACING PROJECTS WHICH HAVE BEEN PLANNED ARE DESCRIBED. ANOTHER ADVANTAGE IN THE USE OF THESE MATERIALS IS THAT THEIR MOISTURE PROOF QUALITY WILL EXTEND THE LIFE OF THE PAVEMENT.

• Publication Date: 1972-7

Media Info

• Pagination: p. 31
• Serial:
  • Roads and Streets
  • Volume: 115
  • Issue Number: 7
  • Publisher: Donnelley (Reuben H) Corporation

Subject/Index Terms

• TRT Terms: Aggregates; Asphalt; Cracking; Dispersers; Pavements; Recycling; Resurfacing; Rubber; Service life; Shale; Tires; Waterproofing
• Old TRIS Terms: Pavement life; Reprocessing
• Subject Areas: Design; Geotechnology; Highways; Materials; Pavements; Vehicles and Equipment;

Filing Info

• Accession Number: 00211830
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 11 1974 12:00AM