MINIMISATION OF CRACKS ON COMPOSITE AIRFIELD PAVEMENTS IN THE UK - 2003

In the United Kingdom the Ministry of Defense and TRL have been working together since the late 1980s in order to reduce the impact of reflection cracking on military airfields. Reflection cracking affects pavements to a greater or lesser extent at over 85% of MOD airfields. The reflection cracking predominantly occurs in overlays to rigid pavement structures and in a less pronounced nature in the asphalt surfacings to semi-rigid pavements and also because of movements at cracks or lane joints in underlying age-hardened asphalt. This in turn necessitates a substantial amount of recurring maintenance/ restoration works in order to ensure safe aircraft ground operations. The studies have involved full-scale trials of alternative anti-reflection cracking techniques, monitoring of their long term performance and the detailed site investigation of reflection cracking occurrences to establish the most appropriate maintenance / restoration treatment. This culminated in the development of a design guide. This paper summarizes the design guide providing information on: the level of site investigation required in order to appropriately evaluate reflection cracking, categorization of the severity of reflection cracking, and the medium- and long- term design options for subsequent pavement rehabilitation. The design options include varying overlay thicknesses, alternate surfacing options (Marshall Asphalt versus porous friction course), crack and seat maintenance and the use of geogrids. A brief summary is provided of the supporting evidence for these design options that developed from the long-term performance monitoring of full-scale trials.

  • Supplemental Notes:
    • Full conference proceedings available on CD-ROM.
  • Corporate Authors:

    World Road Association (PIARC)

    La Grande Arche, Paroi Nord, Niveau 5
    F-92055 La Defense Cedex,   France 
  • Authors:
    • Ellis, S J
    • Cook, J
  • Conference:
  • Publication Date: 2003

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 11p

Subject/Index Terms

Filing Info

  • Accession Number: 00987858
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 3 2005 12:00AM