An Energy Approach for Airport Pavement Low Damage Fatigue Behavior

A correct prediction of the fatigue life is an important issue for the airport pavement structural design, especially with the emergence of new types of aircrafts such as B777 and A380. Design usually requires a large amount of laboratory fatigue tests data which is very time consuming. For a thick airport pavement, it is typical to have long fatigue life which can never be reached in the field nor predicted in the laboratory if the traditional fatigue analysis approach is used. In this study, a new energy based approach, ratio of dissipated energy change (RDEC) is applied to develop a simple procedure to predict the fatigue life of hot mix asphalt (HMA) airport pavements under low damage condition, which can greatly shorten the time required for laboratory fatigue testing. It can also provide a fast determination for a thick airport pavement structure to show whether it can have an extraordinarily long fatigue life without structural failure when the “fatigue endurance limit” concept is incorporated. It is expected that the results will provide a methodology for a more rapid laboratory fatigue endurance limit study.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: 15p
  • Monograph Title: 2007 FAA Worldwide Airport Technology Transfer Conference: New Directions in Airport Technology

Subject/Index Terms

Filing Info

  • Accession Number: 01617391
  • Record Type: Publication
  • Files: TRIS, ATRI, USDOT
  • Created Date: Nov 21 2016 1:43PM