Evaluations of Plant-Produced Foamed Warm Mixture Asphalt

The objective of this study was to evaluate the performance of plant-produced foamed asphalt binders and mixtures. All of the samples were obtained from a project on state route M59 near Oakland, Michigan. Field compacted and loose asphalt mixtures, as well as asphalt binder samples, were analyzed to gauge the performance of WMA. The loose mixture was compacted at different temperatures as WMA and HMA samples. Both asphalt mixture samples were prepared at 4% and 7% air voids for various mixture testing standards. Based on the results, the foamed asphalt binder passed the standard requirements based on the assessments at different aging levels. The compacted HMA specimens at had a better resistance to moisture damage and permanent deformation, especially when compacted at 4% air voids. Rutting potential for the WMA compacted sample was generally higher, which is mainly due to less aging of the mixture compared to HMA. This can also be related to the aging condition of the asphalt binder, where a high production temperature experienced by the asphalt mixture resulted in a stiffer mixture. Based on the comparison between field and lab-compacted samples at 7% air voids, both WMA specimens had a comparable resistance to permanent deformation.

Language

  • English

Media Info

  • Media Type: Web
  • Pagination: pp 205-212
  • Monograph Title: Geo-China 2016: Innovative and Sustainable Solutions in Asphalt Pavements

Subject/Index Terms

Filing Info

  • Accession Number: 01609468
  • Record Type: Publication
  • ISBN: 9780784480052
  • Files: TRIS, ASCE
  • Created Date: Jul 21 2016 3:07PM