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Experimental Investigation on the Effect of Rejuvenator on the Use of a High Amount of Recycled Asphalt Binder

  • Di Wang
  • Maximilian Koziel
  • Augusto Cannone FalchettoEmail author
  • Chiara Riccardi
  • Martin Hugener
  • Laurent Porot
  • Yun Su Kim
  • Goshtasp Cheraghian
  • Michael P. Wistuba
Conference paper
  • 126 Downloads
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 76)

Abstract

Due to economic and environmental benefits, Recycled Asphalt Pavement (RAP) has been commonly used in the asphalt pavement construction. However, the capability of existed mixing plants to incorporate a high percentage of RAP restrict the use of a high RA content. In this study, the possibility of recycling a RA binder content of 80% is experimentally investigated. First, an unmodified 50/70 binder is selected as the reference material; then, an extracted RA binder was blended with the optimal rejuvenator, and the rejuvenator content determined based on the penetration test to restore the original penetration value close to the reference material. Next, both materials are artificially aged to short- and long-term aging conditions. Rheological tests are performed with the Dynamic Shear Rheometer (DSR) and the Bending Beam Rheometer (BBR). Finally, the experimental results are used to evaluate the performance property of virgin and rejuvenated asphalt binders under different aging levels. Results indicate that the properties of the blend of RA and virgin binder can be only partially restored by the action of the rejuvenator.

Keywords

Asphalt binder Reclaimed Asphalt (RA) Rejuvenator Rheological properties Performance tests 

Notes

Acknowledgements

The RILEM Technical Committee on Asphalt Pavement Recycling (RAP) 264 and the contribution of Nynas AB and Kraton to the RILEM inter-laboratory activities are gratefully acknowledged.

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Di Wang
    • 1
  • Maximilian Koziel
    • 1
  • Augusto Cannone Falchetto
    • 2
    Email author
  • Chiara Riccardi
    • 1
  • Martin Hugener
    • 3
  • Laurent Porot
    • 4
  • Yun Su Kim
    • 1
  • Goshtasp Cheraghian
    • 1
  • Michael P. Wistuba
    • 1
  1. 1.Department of Civil Engineering—ISBSTechnische Universität BraunschweigBrunswickGermany
  2. 2.Department of Civil and Environmental EngineeringUniversity of Alaska FairbanksFairbanksUSA
  3. 3.EMPA—Materials Science and TechnologyDübendorfSwitzerland
  4. 4.Kraton ChemicalAlmereThe Netherlands

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