Pyrolytic oil from waste tyres as a promising encapsulated rejuvenator for the extrinsic self-healing of bituminous materials

Extrinsic self-healing of bituminous materials using encapsulated rejuvenators is a hot topic within road materials. Based on a circular economy vision for more sustainable and resilient asphalt pavements, this study explores for the first time the use of pyrolytic oil from waste tyres as a promising encapsulated rejuvenator to promote the extrinsic self-healing in bituminous materials. Pyrolytic oil-in-water emulsions, and capsules and their components were produced and characterised through gas chromatography-mass spectrometry (GC/MS) and SARA fractions analysis, fluorescence microscopy methods, creaming index, thermogravimetric analysis (TGA-DGT), optical and scanning electron microscopy (SEM), encapsulation efficiency and mechanical properties. Main results showed that the pyrolytic oil capsules presented an adequate morphology for the self-healing asphalt, with a good thermal stability, physical–chemical and mechanical properties. Overall, it was also proven that the pyrolytic oil is a rejuvenator that can diffuse in the aged bitumen reducing its viscosity to promote the self-healing of the microcracks.

• Record URL:
  https://doi.org/10.1080/14680629.2021.1907216
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/14680629
• Supplemental Notes:
  • © 2021 Informa UK Limited, trading as Taylor & Francis Group. Abstract reprinted with permission of Taylor & Francis.
• Authors:
  • Norambuena-Contreras, Jose
  • Arteaga-Pérez, Luis E
  • Concha, Jose L
  • Gonzalez-Torre, Irene
• Publication Date: 2021-6

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp S117-S133
• Serial:
  • Road Materials and Pavement Design
  • Volume: 22
  • Issue Number: S1
  • Publisher: Taylor & Francis
  • ISSN: 1468-0629
  • EISSN: 2164-7402
  • Serial URL: http://www.tandfonline.com/loi/trmp20

Subject/Index Terms

• TRT Terms: Aging (Materials); Bituminous materials; Emulsions; Oils; Pyrolysis; Rejuvenators; Sustainable development; Tires; Viscosity; Waste products (Materials)
• Subject Areas: Environment; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01778174
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 28 2021 1:49PM