Flexible pavement management and the use of deflection measurements

Pavement management systems should be able to determine which sections of pavement are in need of attention (repair, rejuvenation or rehabilitation) and when the remaining sections could be expected to require attention and the type of attention that would be required. Relationships between the transient deflection of a pavement and its long term performance have been developed by many organisations. A number of such relationships are presented. They differ one with another due to the manner in which they were developed (empirically) in different parts of the world with different climates, materials, pavement types, traffic loadings, deflection measuring techniques and definitions of acceptable and unacceptable pavements. These differences mitigate against transporting relationships from the area in which they were developed. Deflection measurements appear to be a useful and important means of assessing the structural condition of a pavement and predicting pavement life. However, they should not be used alone, but in combination with other pavement evaluation procedures. In such combinations, deflections can be used in soundly based pavement management systems. The reliability of predictions of pavement performance based on transient deflection measurements is not well established and until reliable relationships are developed caution should be exercised in interpreting deflection results (a).

Language

  • English

Media Info

  • Pagination: 97-119
  • Monograph Title: The properties of paving bitumens in relation to their performance in road surfacings

Subject/Index Terms

Filing Info

  • Accession Number: 01438582
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 869100203
  • Files: ATRI
  • Created Date: Aug 24 2012 9:38PM