Techniques for Mitigation of Reflective Cracks

Reflective cracks are a major concern to airport management personnel, because they can significantly reduce the service life of hot mix asphalt (HMA) overlays of airside airport pavements. Reflective cracks also pose safety problems for airfield pavements because of their potential to cause Foreign Object Debris (FOD), and loss of ride quality or smoothness. These reflective cracks have to be maintained to prevent the generation of loose aggregate and increased roughness that can be detrimental to aircraft operations. The purpose of Airport Asphalt Pavement Technology Program (AAPTP) Project 05-04 was to provide guidance for designing rehabilitation strategies of airside pavements to mitigate the occurrence of reflective cracks in HMA overlays of rigid and flexible pavements. The technical approach and data sources used to determine the effectiveness of different treatment methods was extracted from three areas: information and data included in the literature (including the comparative field studies), data and information obtained from airfields and roadway projects that have placed one to multiple treatment methods, and information from detailed site visits. The probability of success and risk factors were used to rate the reflective cracking mitigation methods. The overall rating of a mitigation method was simply determined by multiplying its probability of success and risk values. Decision trees were prepared for selecting appropriate reflective cracking mitigation techniques and methods that depend on the type and condition of the existing pavement. The decision trees were prepared based on the results from previous research studies, forensic investigation of rehabilitation strategies for the methods identified, a detailed survey of various projects, and experience documented in the literature. This paper overviews the decision tress and recommendations from AAPTP Project 05-04 for mitigation of reflective cracks in HMA overlays.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Photos; References; Tables;
  • Pagination: 16p
  • Monograph Title: 2010 FAA Worldwide Airport Technology Transfer Conference: Next Generation of Airport Technology

Subject/Index Terms

Filing Info

  • Accession Number: 01608197
  • Record Type: Publication
  • Files: TRIS, ATRI, USDOT
  • Created Date: Aug 8 2016 12:06PM