CRACK SEALING METHODS AND MATERIALS FOR FLEXIBLE PAVEMENTS. FINAL REPORT

This study used over forty-four lane miles of test site to gather up to three years of comparative performance data on thirteen crack sealants. The data indicates that the more durable, high ductility materials when applied in a band-aid configuration can be expected to give significantly better performance than the lower ductility materials used by the Utah DOT prior to 1983. Evaluation of sealant placement procedures indicates that routing is a questionable practice, and that the hot compressed air lance may significantly improve the performance of materials placed during cold or wet conditions. Evaluation of UDOT maintenance activities indicates that sealant melters cannot achieve or maintain the required sealant application temperatures under colder winter conditions. The efficiency of melter units should be improved or not operated under those conditions. More accurate temperature gauges on melter units should be acquired. Inaccurate gauges may cause impaired sealant performance and safety. Evaluation of laboratory tests indicate that Bond, Ductility and Force Ductility Tests were useful in predicting the cold temperature performance of crack sealants. The Flow Test was found to be effective in eliminating sealants that tracked or pulled-out during hot weather. Both acceptance and lot laboratory testing are recommended. The report includes specifications for material and procedures, and make recommendations for modifications to both equipment and sealing practice. (Author)

• Corporate Authors:

  Utah Department of Transportation

  4501 South 2700 West
  Salt Lake City, UT  United States  84114-8410

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Benlangie, M C
  • Anderson, D I
• Publication Date: 1985-5

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 74 p.

Subject/Index Terms

• TRT Terms: Accuracy; Applications; Bonding; Compressed air; Ductility; Durability; Flexible pavements; Pavement cracking; Sealing (Technology); Sealing compounds; Temperature measuring instruments; Test procedures
• Old TRIS Terms: Sealing
• Subject Areas: Geotechnology; Highways; Maintenance and Preservation; Materials; Research; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 00454334
• Record Type: Publication
• Report/Paper Numbers: FHWA-UT-85-1
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jul 31 1988 12:00AM