Evaluation of the Performance Properties of Asphalt Mixes Produced with Re-refined Heavy Vacuum Distillate Bottoms

Asphalt mixtures used for paving are required to perform under extreme conditions. At high temperatures, the mix must withstand heavy traffic loading to prevent rutting. At low temperatures, it must remain flexible to resist cracking from traffic and thermal stresses. The aggregate structure is a primary performance characteristic for high temperature rutting, but it is the asphalt binder that has a much more critical role when it comes to cracking. Re-refined Heavy Vacuum Distillation Bottoms (RHVDB) - the residue from re-refining of used engine oil - has been used to improve the low temperature properties of asphalt binders and improve its cracking response. Previous papers have shown the improved binder properties with the addition of RHVDB, but the question still remains - will these materials perform well in a mixture? An in-depth evaluation was performed to determine the performance characteristics of asphalt mixtures produced with binders modified with RHVDB at several different levels. The rutting, moisture damage, fatigue and low temperature properties of the mixtures were evaluated against control mixes produced with unmodified binders. Multiple tests were run to compare the mixtures with RHVDB against control mixes. The study provides an extensive evaluation of the effects of RHVDB modification on mix performance. (A) For the covering abstract of this conference see ITRD record number 201402RT334E.

Language

  • English

Media Info

  • Pagination: p. 273-90
  • Monograph Title: Proceedings of the Fifty-Eighth Annual Conference of the Canadian Technical Asphalt Associatio (CTAA): St. John's, Newfoundland and Labrador, November 2013

Subject/Index Terms

Filing Info

  • Accession Number: 01518094
  • Record Type: Publication
  • Source Agency: Transportation Association of Canada (TAC)
  • Files: ITRD, TAC
  • Created Date: Mar 11 2014 11:01AM