COMPARISON OF METHODS TO RETARD REFLECTIVE CRACKING IN BITUMINOUS CONCRETE USING FABRICS AND FIBERS

The primary purpose of this project is to determine whether any of various treatments, using geotechnical fabrics and fibers, will significantly retard reflective crack formation in ann asphaltic concrete overlay. Four paving fabrics, one asphalt/fiber membrane and one fiber-reinforced asphalt concrete, are the treatment alternatives being evaluated. All treatment to determine relative performance, considering cost, ease of placement or adaptability to normal overlay practice, and ability to resist reflective cracking. Field monitoring is being maintained for three years to determine overall and relative performance of each treatment. Monitoring construction indicated ease of placement varied considerably; application experience was determined to be a significant factor. Although fiber-reinforced asphalt concrete was rated least expensive and easy to adapt to normal paving practice, early performance data (one year) indicates only marginal improvement in resisting reflective cracking relative to the control section pavement. One paving fabric and the asphalt/fiber membrane are providing the best early performance. Proper identification of pavement base conditions and adequate preliminary treatment appear to be the most significant factors for correlating relative performance.

• Corporate Authors:

  Pennsylvania Department of Transportation

  Bureau of Bridge and Roadway Technology, T&S Bldg, Room 1009
  Harrisburg, PA  United States  17120

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Maurer, D A
• Publication Date: 1985-9

Media Info

• Features: Figures; Photos; Tables;
• Pagination: 64 p.

Subject/Index Terms

• TRT Terms: Asphalt concrete; Fabrics; Fibers; Overlays (Pavements); Performance evaluations; Reflection cracking
• Old TRIS Terms: Retarding
• Subject Areas: Construction; Design; Geotechnology; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00453744
• Record Type: Publication
• Report/Paper Numbers: FHWA-PA-85-015, Res Project 83-8
• Contract Numbers: RP 83-08
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: Jul 31 1986 12:00AM