Laboratory Investigation of the Ageing of Dense Graded and Stone Mastic Asphalt Mixtures for Runway Surfacing

Ungrooved stone mastic asphalt (SMA) is an attractive alternate to grooved dense graded asphalt (DGA) for runway surfacing. Laboratory and field trials have demonstrated the comparable mechanical properties of SMA, but no comparison of the age-related weathering, which often triggers runway resurfacing, has been performed. This research compared the ageing of SMA to otherwise identical DGA, over 98 days of accelerated ageing in the laboratory. The surface texture and modulus of the mixture samples were compared, as well as extracted binder rheology, composition, and chemistry. It was concluded that binder properties were unable to reflect the benefit of the greater binder volume associated with different mixture types. Similarly, the ageing profile of the mixture samples complicates comparison of the modulus of the samples. Overall, it was concluded that SMA is expected to last approximately 4 years longer as a runway surface, compared to equivalent DGA.

• Record URL:
  • https://doi.org/10.1061/9780784485255.017
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784485255
• Supplemental Notes:
  • © 2023 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • White, Greg
  • Abouelsaad, Ahmed
• Conference:
  • 13th International Conference on Road and Airfield Pavement Technology
  • Location: Beijing , China
  • Date: 2023-7-6 to 2023-7-8
• Publication Date: 2024

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 186-202
• Monograph Title: International Conference on Road and Airfield Pavement Technology 2023

Subject/Index Terms

• TRT Terms: Airport runways; Asphalt mixtures; Dense graded aggregates; Material aging; Service life; Stone matrix asphalt; Weather resistance
• Subject Areas: Aviation; Pavements; Terminals and Facilities;

Filing Info

• Accession Number: 01916338
• Record Type: Publication
• ISBN: 9780784485255
• Files: TRIS, ASCE
• Created Date: Apr 22 2024 5:08PM