Measurement Method of Blending Status between Virgin and Aged Binder in Recycled Asphalt Mixtures—A Literature Review

Design procedure of hot in-plant recycled asphalt mixture assumes that the residue aged binder in reclaimed asphalt pavement (RAP) is fully blended with virgin binder. However, recent research shows that the interaction between aged binder and virgin binder may not achieve a total blending status. The difference between design assumption and actual blending status means that insufficient asphalt binder used in mixtures may cause dry hot mix asphalt (HMA) and premature pavement distress. Therefore, it is significant to evaluate the reasonableness of design assumption and mixing quality of recycled asphalt mixtures to measure the blending status between aged binder and virgin binder. In this paper, four typical measurement method of blending status — binder-marked method, difference-identified methods, staged extraction method, and indirect performance measured method — are summarized. The future development in measurement method is also discussed.


  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 311-318
  • Monograph Title: Challenges and Advances in Sustainable Transportation Systems

Subject/Index Terms

Filing Info

  • Accession Number: 01527156
  • Record Type: Publication
  • ISBN: 9780784413364
  • Files: TRIS, ASCE
  • Created Date: May 15 2014 3:02PM