Evaluation of Damage to Asphalt Pavements using a Micro-focus CT Scanner and Three-dimensional Crack Analysis

Longitudinal cracking has become increasingly common in asphalt concrete pavements worldwide since the introduction of modified bituminous binder to reduce rutting. This study extracted sample cores from 2 road sections (A and B, using a diamond cutter) from a motorway pavement which had been in service for 5 years and was showing no cracks (A) or longitudinal cracking on the surface (B). Further, cores for each layer of new and damaged sections were analyzed for the types of cracks using a newly developed microfocus CT scanner and a 3-D crack analysis program and the study obtained failure limits for each layer. The study found that the results can be applied to the pavement of both sections (A and B) in service, that it is effective for direct evaluation of pavement damage, and can be applied to diagnose the degree of 3-D damage in asphalt pavements.

  • Availability:
  • Authors:
    • Tomoto, Takashi
    • Moriyoshi, Akihiro
  • Publication Date: 2009

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01144889
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 18 2009 4:45PM