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

Jiménez del Barco Carrión, Ana and Perez-Martinez, M. and Themeli, A. and Lo Presti, Davide and Marsac, P. and Pouget, Simon and Hammoum, F. and Chailleux, Emmanuel and Airey, Gordon (2017) Evaluation of bio-materials’ rejuvenating effect on binders for high-reclaimed asphalt content mixtures. Materiales de Construcción, 67 (327). pp. 1-11. ISSN 1988-3226

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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.

Item Type: Article
Additional Information: Published in July-September 2017 issue.
Keywords: Bio-material; Reclaimed asphalt; High content; Rejuvenation; Rheology
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Civil Engineering
Identification Number: https://doi.org/10.3989/mc.2017.04516
Depositing User: Airey, Gordon
Date Deposited: 29 Mar 2018 10:02
Last Modified: 02 Jul 2018 09:19
URI: http://eprints.nottingham.ac.uk/id/eprint/50790

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