ASPHALT-RUBBER INTERLAYER FIELD PERFORMANCE. FINAL REPORT

Test roads were constructed near El Paso, Buffalo and Brownsville under Study 2-9-83-347. All test roads were designed as statistical experiments such that analysis of effects due to asphalt-rubber formulation could be determined. Asphalt-rubber was formulated using various rubber concentration, rubber type, digestion conditions, and interlayers were applied at various shot rates. In addition, aggregate grade was varied, and single and double binder applications were studied. Based on field performance to date, the interlayer which is performing the best in the El Paso Test Road contains 26% rubber and was applied at 0.40 gallons per square yard. The Brownsville Test Road is experiencing bleeding from the interlayer in half of the test sections due to excessive interlayer binder application rates. The Buffalo Test Road is not experiencing any distress at this time. Long-term monitoring of these test roads will be continued under Study 1-10-77-187.

• Record URL:
  • https://library.ctr.utexas.edu/hostedpdfs/tti/449-1F.pdf
• Supplemental Notes:
  • Research study title: Monitoring Asphalt Rubber Test Road Performance.
• Corporate Authors:

  Texas Transportation Institute

  Texas A&M University System, 1600 E Lamar Boulevard
  Arlington, TX  United States  76011

  Texas State Department of Highways & Public Transportation

  Transportation Planning Division, P.O. Box 5051
  Austin, TX  United States  78763

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Adams, C K
  • Gonzales, J
• Publication Date: 1987-6

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 250 p.

Subject/Index Terms

• TRT Terms: Aggregate gradation; Asphalt rubber; Interfaces; Performance; Test sections
• Uncontrolled Terms: Field performance; Interlayers
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00472513
• Record Type: Publication
• Report/Paper Numbers: FHWA/TX-87/449-1F, TTI 2-9-85-449-1F
• Contract Numbers: Study 2-9-85-449
• Files: TRIS, USDOT, STATEDOT
• Created Date: Aug 31 1987 12:00AM