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While recycling of asphalt is increasing, there is still lack of practical solutions for processing and homogenizing reclaimed asphalt, and designing mixtures for maximum Reclaimed Asphalt Pavement (RAP) use. This paper briefly summarizes the HighRAP research project conducted in Switzerland. The findings and the developed recommendations can be used by asphalt producers and road owners to increase the RAP use in the production of new asphalt mixtures. The recommendations include a method for quantitative evaluation of RAP processing, rejuvenator selection methodology, criteria for balanced mix design, suggestions for performance-based test methods, and the maximum content of RAP for various mixtures, including polymer-modified and wearing courses.

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Highly Recycled Asphalt Pavement: Recommendations for Producers and Road Owners

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年

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  • Martins Zaumanisa,
  • Lily Poulikakos,
  • Lukas Boesiger,
  • Bernhard Kunz,
  • Henry Mazzoni,
  • Peter Bruhin,
  • Dominique Lötscher,
  • Urs Schellenberg,
  • Gion Dosch,
  • Gabriel-Martin Elekes

摘要

While recycling of asphalt is increasing, there is still lack of practical solutions for processing and homogenizing reclaimed asphalt, and designing mixtures for maximum Reclaimed Asphalt Pavement (RAP) use. This paper briefly summarizes the HighRAP research project conducted in Switzerland. The findings and the developed recommendations can be used by asphalt producers and road owners to increase the RAP use in the production of new asphalt mixtures. The recommendations include a method for quantitative evaluation of RAP processing, rejuvenator selection methodology, criteria for balanced mix design, suggestions for performance-based test methods, and the maximum content of RAP for various mixtures, including polymer-modified and wearing courses.