INTERIM REPORT, STUDIES AND EXPERIMENTAL PROJECTS ON SEAL COATS FOR ARIZONA

OWING TO DETERIORATION OF EMULSION AND CHIP SEAL COATS PLACED ON ARIZONA HIGHWAYS IN THE EARLY 1960'S, A VARIETY OF SURVEYS WAS MADE TO DETERMINE THE CAUSE. AS THE RESULTS DID NOT SUPPORT A BROAD APPROACH TO THE PROBLEM, STUDIES WERE COMMENCED IN 1968 ON THE ASPHALTS, AGGREGATES, DESIGN METHODS, AND CONSTRUCTION TECHNIQUES EMPLOYED. THE STUDIES CONSISTED OF THREE MAIN PARTS: (1) COMPARISON OF THE CHEMICAL AND PHYSICAL PROPERTIES OF TODAY'S ASPHALTS WITH THOSE OF PRE-1957 ASPHALTS; (2) REVIEW OF MODIFICATIONS TO AGGREGATE GRADATIONS AND PRODUCTION METHODS SINCE 1957; AND (3) A LITERATURE VIEW ON SEAL COAT DESIGN METHODS. THE TEST AND SAMPLING METHODS USED IN THE STUDIES ARE DESCRIBED. CONCLUSIONS ARE DRAWN AND RECOMMENDATIONS ARE MADE CONCERNING DESIGN AND APPLICATION OF AGGREGATE, BINDER, PRECOATING, AND SEAL COATS.

• Supplemental Notes:
  • pp 120-147, 4 FIG, 2 TAB
• Corporate Authors:

  University of New Mexico, Albuquerque

  Eighth Paving Conference Proceedings
  Albuquerque, NM  United States  87131
• Authors:
  • Morris, G R
• Publication Date: 1970

Subject/Index Terms

• TRT Terms: Aggregate gradation; Aggregates; Asphalt; Binders; Chemical properties; Design; Durability; Physical properties; Precoated aggregates; Production; Seal coats
• Subject Areas: Design; Geotechnology; Highways; Maintenance and Preservation; Materials;

Filing Info

• Accession Number: 00218834
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 13 1971 12:00AM