In-place Asphalt Recycling for Small Airfield Repairs in Remote Locations

This paper presents results from an evaluation of Hot In-Place Recycling (HIR) techniques for conducting small repairs of aged asphalt concrete (AC) pavements on airfields in remote locations. The evaluation included both laboratory and field testing. In the laboratory, four different types of rejuvenators were evaluated using the Asphalt Pavement Analyzer (APA) test and the Dynamic Shear Rheometer (DSR) test to investigate the use of rejuvenators to soften aged binder obtained from a reclaimed asphalt pavement (RAP) material. The use of small quantities of Type I portland cement during the mix rejuvenation cycle was also explored. Optimum dosage rates for the four types of rejuvenators tested were developed, and the best performing rejuvenator-dosage rate combination was selected to use for field trials. The best combination of rejuvenator-cement dosage was also determined and used for field testing. In the field testing portion of the research, a series of repairs were conducted using HIR technology, rejuvenators, cement and two RAP materials. The performance of the repairs was evaluated under simulated F-15E aircraft traffic. All repairs met the objective of 3,500 passes of F-15E aircraft, and the extracted binder from the repairs showed signs of rejuvenation, which could result in longer lasting repairs. The overall conclusion of the research was that HIR of aged AC on airfield pavements can produce a quality repair that is capable of withstanding considerable aircraft traffic and the aged binder can be softened via use of rejuvenators to produce a more permanent repair.

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• Supplemental Notes:
  • This paper was sponsored by TRB committee AFD70 Pavement Rehabilitation.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Carruth, William D
  • 0000-0002-3560-5291
  • Mejías-Santiago, Mariely
• Conference:
  • Transportation Research Board 94th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2015-1-11 to 2015-1-15
• Date: 2015

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: 14p
• Monograph Title: TRB 94th Annual Meeting Compendium of Papers

Subject/Index Terms

• TRT Terms: Airport runways; Asphalt concrete pavements; Field tests; Hot in-place recycling; Laboratory tests; Preservation; Reclaimed asphalt pavements; Rheometers; Rural areas
• Uncontrolled Terms: Remote areas
• Subject Areas: Aviation; Maintenance and Preservation; Materials; Pavements; I31: Bituminous Binders and Materials; I32: Concrete; I60: Maintenance;

Filing Info

• Accession Number: 01551934
• Record Type: Publication
• Report/Paper Numbers: 15-3234
• Files: PRP, TRIS, TRB, ATRI
• Created Date: Jan 29 2015 9:17AM