Experimental Study to Re-refine Aged Binder Using Water

In Japan, asphalt pavement waste is recycled about 99%, of which about 60% is utilized as a hot recycled mixture. However, conventional technology does not guarantee the quality of repeatedly recycled pavement. In the future, it is essential to establish sustainable recycling technology for asphalt pavement waste. Based on above, we are working on developing reconstruction technology that can separate aggregate and aged binder in waste materials and restore the separated material to its original state. We confirmed that aggregate separated and recycled by the hot water rubbing method can be maintained and used in the same way as with virgin aggregate, in previous study. This study attempted to recycle asphalt using water with a focus on solvent characteristics of high-temperature and high-pressure water. As a result, hydrothermal decomposition technology utilizing high-temperature and high-pressure water reduced the molecular weight and oxidation degree in aged binder and confirmed to re-refined to near chemical properties and physical properties of virgin asphalt.

• Record URL:
  https://link.springer.com/chapter/10.1007/978-3-030-29779-4_30
• Record URL:
  https://link.springer.com/book/10.1007/978-3-030-29779-4
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9783030297787
• Supplemental Notes:
  • © Springer Nature Switzerland AG 2020. Corrected publication 2020. The contents of this paper reflect the views of the authors and do not necessarily reflect the official views or policies of the Transportation Research Board or the National Academy of Sciences.
• Corporate Authors:

  Springer International Publishing

  ,    
• Authors:
  • Akatsu, Kengo
  • Kanou, Yousuke
  • Akiba, Shouichi
• Conference:
  • 5th International Symposium on Asphalt Pavements & Environment (ISAP APE 2019)
  • Location: Padua , Italy
  • Date: 2019-9-11 to 2019-9-13
• Publication Date: 2019-9

Language

• English

Media Info

• Media Type: Web
• Edition: 1
• Features: References;
• Pagination: pp 303-312
• Monograph Title: Proceedings of the 5th International Symposium on Asphalt Pavements & Environment (APE)
• Serial:
  • Lecture Notes in Civil Engineering
  • Volume: 48
  • Publisher: Springer Singapore
  • ISSN: 2366-2557
  • Serial URL: https://www.springer.com/series/15087

Subject/Index Terms

• TRT Terms: Hydrolysis; Pyrolysis; Reclaimed asphalt pavements; Recycling; Refining
• Geographic Terms: Japan
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01897471
• Record Type: Publication
• ISBN: 9783030297787
• Files: TRIS
• Created Date: Oct 25 2023 4:57PM