Europe generates a large amount of site-won asphalt annually. European Union (EU) promised to increase circular economy policies, considering the concerns related to the efficient use of non-renewable resources and the struggle against climate change. Innovative technique’s contribution to those goals is of primary importance.
This paper summarises the results of the CoolAsphalt project, aiming to study an innovative process to reuse RAP – reclaimed asphalt pavement – with a high incorporation proportion, up to 100%. High rates of RAP in new asphalt mixtures for pavements require a rejuvenating agent to recover the lost bitumen’s volatile components. This study involved the addition of waste cooking oil (WCO) collected from restaurants, canteens and collecting points around municipal territories. Vegetable oil consumption is growing annually worldwide, resulting in a large amount of WCO that needs to be valorised.
The laboratory studies consisted of designing the asphalt concrete blends to apply in real-scale trial sections and assessing their mechanical and functional properties because resistance to ageing could be an issue for the lifecycle of these asphalt mixtures. An accelerated long-term ageing procedure simulated a five-year in-service period for Lisbon’s climatic conditions.
The results show that the mechanical and surface properties of the hot (HMA) and warm mixtures (WMA) are suitable for low/medium traffic pavements. During the blends’ manufacturing in a conventional drum plant, some issues related to the RAP’s water content and the mixing temperature arose. These events allow the authors to highlight some recommendations on producing high RAP content asphalt mixtures with WCO as a rejuvenating agent.
Laboratory and Field Study of High-Rate Recycled Asphalt Pavement Rejuvenated with Waste Cooking Oil
Lect.Notes Mobility
Transport Research Arena Conference ; 2024 ; Dublin, Ireland April 15, 2024 - April 18, 2024
Transport Transitions: Advancing Sustainable and Inclusive Mobility ; Kapitel : 92 ; 645-651
19.07.2025
7 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Design, Placement, and Laboratory and Field Evaluation of Rejuvenated Cold Recycled Asphalt Mixtures
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