| Title |
Pyrolytic oil from waste tyres as a promising encapsulated rejuvenator for the extrinsic self-healing of bituminous materials |
| ID_Doc |
7864 |
| Authors |
Norambuena-Contreras, J; Arteaga-Pérez, LE; Concha, JL; Gonzalez-Torre, I |
| Title |
Pyrolytic oil from waste tyres as a promising encapsulated rejuvenator for the extrinsic self-healing of bituminous materials |
| Year |
2021 |
| Published |
|
| DOI |
10.1080/14680629.2021.1907216 |
| Abstract |
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. |
| Author Keywords |
Bituminous materials; pyrolytic oil; encapsulated rejuvenators; aged bitumen; crack-healing; sustainable asphalt pavements |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000635020200001 |
| WoS Category |
Construction & Building Technology; Engineering, Civil; Materials Science, Multidisciplinary |
| Research Area |
Construction & Building Technology; Engineering; Materials Science |
| PDF |
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