Evaluation of bio-materials’ rejuvenating effect on binders for high-reclaimed asphalt content mixtures

Jim�nez del Barco Carri�n, Ana; Perez-Martinez, M.; Themeli, A.; Lo Presti, Davide; Marsac, P.; Pouget, Simon; Hammoum, F.; Chailleux, Emmanuel; Airey, Gordon

Abstract

The interest in using bio-materials in pavement engineering has grown significantly over the last decades due to environmental concerns about the use of non-recoverable natural resources. In this paper, bio-materials are used together with Reclaimed Asphalt (RA) to restore some of the properties of the aged bitumen present in mixtures with high RA content. For this purpose, two bio-materials are studied and compared to conventional and polymer modified bitumens. Blends of these materials with RA bitumen were produced and studied to simulate a 50% RA mixture. The rejuvenating effect of the two bio-materials on RA has been assessed and compared with the effect of the conventional binders. Apparent Molecular Weight Distribution of the samples (obtained by the ?-method) and different rheological parameters were used for this purpose. Results revealed the power of bio-materials to rejuvenate RA bitumen, showing their capability to be used as fresh binders in high-RA content mixtures.

Citation

Jiménez del Barco Carrión, A., Perez-Martinez, M., Themeli, A., Lo Presti, D., Marsac, P., Pouget, S., …Airey, G. (in press). Evaluation of bio-materials’ rejuvenating effect on binders for high-reclaimed asphalt content mixtures. Materiales de Construcción, 67(327), https://doi.org/10.3989/mc.2017.04516

• Journal Article Type: Article
• Acceptance Date: Nov 23, 2016
• Online Publication Date: Jul 10, 2017
• Deposit Date: Mar 29, 2018
• Publicly Available Date: Mar 29, 2018
• Journal: Materiales de Construcción
• Print ISSN: 0465-2746
• Electronic ISSN: 1988-3226
• Publisher: Consejo Superior de Investigaciones Científicas
• Peer Reviewed: Peer Reviewed
• Volume: 67
• Issue: 327
• DOI: https://doi.org/10.3989/mc.2017.04516
• Keywords: Bio-material; Reclaimed asphalt; High content; Rejuvenation; Rheology
• Public URL: https://nottingham-repository.worktribe.com/output/872220
• Publisher URL: http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2184
• Additional Information: Published in July-September 2017 issue.