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Binder design of high RAP content hot and warm asphalt mixture wearing courses

Barco Carri�n, A.J.D.; Lo Presti, D.; Airey, G.D.

Authors

A.J.D. Barco Carri�n

D. Lo Presti

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GORDON AIREY GORDON.AIREY@NOTTINGHAM.AC.UK
Professor of Pavement Engineering Materials



Abstract

Reclaimed Asphalt Pavement (RAP) has shown great potential for being used in the construction or maintenance of roads. However, RAP is usually downgraded to lower pavement layers and the percentage of RAP used in wearing courses is still moderate (≤30%). The research and results contained in this paper focus on the definition of binder recipes aimed at increasing the percentage of RAP in hot and warm mix asphalt wearing courses. A review of current internationally used blend design methodologies is presented followed by case studies aimed at defining binder recipes for high RAP content asphalt mixture wearing courses to be further used for mix design and production in asphalt plants. Binder design has been carried out by means of rotational viscosity, Dynamic Shear Rheometer, Bending Beam Rheometer and conventional experimental tests with results showing that the amount of RAP used in a mix can be increased through the development of an accurate binder design and the selection of an appropriate rejuvenator. As a result, laboratory design showed that using up to 90% of RAP is a feasible option. However, the percentage of RAP to be used is highly dependent on the properties of the initial RAP binder, so every case has to be independently and carefully studied. The research presented is carried out as part of the CEDR Transnational Road research Programme Call 2012 (http://allback2pave.fehrl.org) and the Marie Curie Initial Training Network action, FP7-PEOPLE-2013-ITN (http://www.superitn.eu). © 2015 Taylor & Francis.

Citation

Barco Carrión, A., Lo Presti, D., & Airey, G. (2015). Binder design of high RAP content hot and warm asphalt mixture wearing courses. Road Materials and Pavement Design, 16, 460-474. https://doi.org/10.1080/14680629.2015.1029707

Journal Article Type Article
Acceptance Date Jan 23, 2015
Online Publication Date Apr 14, 2015
Publication Date Jul 1, 2015
Deposit Date Nov 23, 2018
Print ISSN 1468-0629
Publisher Taylor & Francis
Peer Reviewed Peer Reviewed
Volume 16
Pages 460-474
DOI https://doi.org/10.1080/14680629.2015.1029707
Keywords binder; blend design; high RAP content; rejuvenator; warm mix; Asphalt; Asphalt pavements; Asphalt plants; Bending tests; Binders; Curricula; Design; Education; Ferroelectric materials; Mixtures; Rheometers; Bending beam rheometer; Design Methodology; Dyn
Public URL https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929946414&doi=10.1080%2f14680629.2015.1029707&partnerID=40&md5=05d84f03f99f48a315b225dfd490d46b
Publisher URL https://www.tandfonline.com/doi/full/10.1080/14680629.2015.1029707