Improving rheological and self-healing properties of aged asphalt binders using rejuvenators derived from waste tyre thermal conversion

Norambuena-Contreras, J.; Delgadillo, R.; Concha, J.L.; Chávez-Delgado, M.; Arteaga-Pérez, L.E.; Alpízar-Reyes, E.; Segura, C.; Casas-Ledón, Y.

doi:10.34726/10605

Record link:

http://hdl.handle.net/20.500.12708/218987
https://doi.org/10.34726/10605

Title:

Improving rheological and self-healing properties of aged asphalt binders using rejuvenators derived from waste tyre thermal conversion

Citation:

Norambuena-Contreras, J., Delgadillo, R., Concha, J. L., Chávez-Delgado, M., Arteaga-Pérez, L. E., Alpízar-Reyes, E., Segura, C., & Casas-Ledón, Y. (2025). Improving rheological and self-healing properties of aged asphalt binders using rejuvenators derived from waste tyre thermal conversion. In L. Eberhardsteiner, B. Hofko, & R. Blab (Eds.), Advances in Materials and Pavement Performance Prediction IV : Contributions to the 4th International Conference on Advances in Materials and Pavement Performance Prediction (AM3P 2025), 7-9 May 2025, Vienna, Austria (pp. 267–270). TU Wien, E230-03 Road Engineering. https://doi.org/10.34726/10605

reposiTUm DOI:

10.34726/10605

CatalogPlus:

AC17636679

Publication Type:

Inproceedings - Full-Paper Contribution

Language:

English

Authors:

Norambuena-Contreras, J.
Delgadillo, R.
Concha, J.L.
Chávez-Delgado, M.
Arteaga-Pérez, L.E.
Alpízar-Reyes, E.
Segura, C.
Casas-Ledón, Y.

Organisational Unit:

E000 - Technische Universität Wien

Published in:

Advances in Materials and Pavement Performance Prediction IV : Contributions to the 4th International Conference on Advances in Materials and Pavement Performance Prediction (AM3P 2025), 7-9 May 2025, Vienna, Austria

ISBN:

978-3-901912-99-3

Volume:

DOI of the book:

10.34726/9259

Date (published):

2025

Event name:

Advances in Materials and Pavement Performance Prediction 2025 (AM3P 2025)

Event date:

7-May-2025 - 9-May-2025

Event place:

Wien, Austria

Number of Pages:

Publisher:

TU Wien, E230-03 Road Engineering, Wien

Peer reviewed:

Yes

Keywords:

Asphalt binder; Rejuvenators; Pyrolysis; Self-healing; Capsules

Abstract:

This study investigates the development and application of asphalt rejuvenators derived from waste tyres through pyrolysis process. Two several products were produced and evaluated: an optimised Pyro-lytic Liquid Rejuvenator (PLR) and Biopolymeric Polynuclear Capsules (BPC) encapsulating PLR for self-healing asphalt mixtures. Rheological and self-healing properties of aged asphalt binders were examined using dynamic shear rheometer and tensile fracture-healing tests. The main results demonstrated that PLR significantly reduced the stiffness of aged binders, achieving properties comparable to unaged binders at 15% dosage by weight. BPCs enhanced self-healing, with a maximum Effective Healing Level (EHL) of 44.5% achieved at 1% dosage after 24 hours rest period at 20ºC. The results suggest that pyrolytic rejuvenators and encapsulated formulations provide effective and sustainable solutions for improving the durability of aged asphalt binders.

Research Areas:

Modeling and Simulation: 35%
Structure-Property Relationsship: 30%
Computational System Design: 35%

Science Branch:

2011 - Bauingenieurwesen: 30%
2013 - Verkehrswesen: 70%

License:

CC BY 4.0