USE OF FABRICS AND OTHER MEASURES FOR RETARDING REFLECTIVE CRACKING OF ASPHALTIC CONCRETE OVERLAYS

Prevention or control of reflection cracks in asphaltic concrete overlays has been a problem from the inception of this type of construction. The many different treatments that have been tried in an effort to solve this problem are: (1) reinforcement within and below the overlay, (2) bond breakers, (3) stress-relieving layers, (4) asphalt-mix additives, and (5) placement of fabrics between the existing pavement and the overlay. At the present time, no treatment has been tried that will completely prevent the formation of reflection cracks. Some treatments do delay the formation of cracks, while others do not appear to help at all. Indications are that fabrics do have some beneficial effects, such as a moisture barrier, even though the overlays develop reflection cracks. The fabrics that have been tried for the control of reflection cracks included: (1) Petromat, (2) Bidim, (3) Typar, (4) Cerex, (5) Mirafi, (6) Structofors, (7) Bituthene, (8) Protecto-Wrap, and (9) Fiberglass. Asphalt-rubber interlayers, as formulated by the Arizona Refining Company and the Sahuaro Petroleum Company, show promise in retarding reflection cracks. (Author)

• Corporate Authors:

  U.S. Army Waterways Experiment Station

  3909 Halls Ferry Road
  Vicksburg, MS  United States  39180-6199

  Federal Aviation Administration

  Systems R&D Service, 800 Independence Avenue, SW
  Washington, DC  United States 
• Authors:
  • Jackson, R D
• Publication Date: 1980-3

Media Info

• Pagination: 22 p.

Subject/Index Terms

• TRT Terms: Additives; Asphalt; Asphalt concrete; Bonding; Concrete; Countermeasures; Fabrics; Fracture mechanics; Material reinforcement; Overlays (Pavements); Pavement cracking; Pavement layers; Pavements; Prevention; Reflection cracking; Rubber; Stress relieving
• Subject Areas: Geotechnology; Highways; Materials; Pavements; Safety and Human Factors; Security and Emergencies; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 00318393
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: WES-MP-GL-80-2 Final Rpt., FAA/RD-80/8
• Contract Numbers: DOT-FA78WAI-837
• Files: NTIS, TRIS, USDOT
• Created Date: Oct 8 1981 12:00AM