Posttraffic Testing Results on Rubblized Concrete Pavements with Hot-Mix Asphalt Overlays at FAA’s National Airport Pavement Test Facility

Full-scale traffic tests were completed on three rubblized rigid airport pavements which had been overlaid with five inches (12.7 cm) of hot mix asphalt at the FAA’s National Airport Pavement Test Facility. Initially, the overlaid pavements were trafficked with a 4-wheel landing gear configuration (with wander) and 55,000-lbs (25-tonnes) wheel load. Straightedge rut depth measurements and transverse profile measurements were made at regular intervals during the traffic tests. No significant distresses were observed during the 5000 passes, after which the wheel load was increased to 65,000-lbs (29.5-tonnes) and a 6-wheel landing gear was used for testing. One of the rubblized pavements (MRC – rubblized concrete on conventional base) exhibited complete structural failure. MRG (rubblized concrete on grade) was considered to have suffered severe structural deterioration at the end of trafficking but retained sufficient structural capacity to support the applied load. MRS (rubblized concrete over econocrete base) did not exhibit severe structural deterioration at the end of trafficking despite having accumulated significant levels of rutting and shear flow in the asphalt. Four trenches were opened perpendicular to the centerline of the test items to conduct posttraffic investigation into the failure mechanism of the pavement structure. The trenching included testing for layer characterization and removal of each of the pavement layers to reveal the subgrade interface and subsequent subgrade layers below. Tests conducted on the pavement component layers included plate load tests, CBRs, in-situ densities, moisture contents, layer profile measurements, and visual evaluations. This paper summarizes the results from posttraffic tests and provides some insight into the failure mechanism of rubblized concrete airport pavements.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Garg, Navneet
  • Ricalde, Lia
  • Hayhoe, Gordon F
• Conference:
  • Transportation Research Board 86th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2007-1-21 to 2007-1-25
• Date: 2007

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; Photos; References; Tables;
• Pagination: 13p
• Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

• TRT Terms: Airport facilities; Airport runways; Airports; Hot mix asphalt; Landing gear; Pavement design; Pavement layers; Pavement performance; Pavements; Wheel loads
• Uncontrolled Terms: Rubblized concrete pavements
• Subject Areas: Aviation; Design; Highways; Pavements; Terminals and Facilities; Vehicles and Equipment; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01043836
• Record Type: Publication
• Report/Paper Numbers: 07-3119
• Files: TRIS, TRB
• Created Date: Mar 12 2007 8:09AM