Reclaimed Polymers as Asphalt Binder Modifiers for More Sustainable Roads: A Review Brasileiro, Luzana Moreno Navarro, Fernando Manuel Tauste Martínez, Raúl Rubio Gámez, María Del Carmen Matos, José Reclaimed polymers Asphalt binder Sustainability Recycling Bitumen The use of polymer-modified binders in asphalt mixtures has become more widespread due to their reduced thermal susceptibility and improved rutting and fatigue resistance. Nevertheless, their high cost limits their application, thus making the use of reclaimed polymers (RP) an interesting alternative for both reducing price and extending the service life of pavements. This paper; therefore, presents a comparative review of the recycled polymers most commonly studied as bitumen modifiers: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), ethyl vinyl acetate (EVA), and ground tire rubber (GTR), in order to facilitate their selection and extend the use of the bitumen. The differences in terms of melting point, mixing conditions, and maximum quantity of added polymer are analyzed. Moreover, their effect on the mechanical behavior of the asphalt binders and their stability with and without the use of additives is presented. According to the literature revision, the performance of the new binder is more influenced by the kind of polymer that was incorporated and the mixing conditions than by the base bitumen that was chosen, although rheological evaluation is needed to fully understand the modification mechanisms of the modified binder. In general terms, plastomers have a stronger effect in terms of increasing the stiffness of the bitumen in comparison with crumb rubber (elastomers), thus providing an improved rutting resistance. The joint use of polyethylene (plastomer) and crumb rubber (elastomer) can be an interesting option for its recycling potential and mechanical performance, although further study is needed to achieve stable bitumen across the entire range of temperatures; additives, such as maleic anhydride (MA), are commonly employed to improve the stability of the binder and enhance its characteristics, but their use could limit the economic benefits of using recycled materials. 2020-01-23T10:45:01Z 2020-01-23T10:45:01Z 2019-01-26 journal article Brasileiro, L., Moreno-Navarro, F., Tauste-Martínez, R., Matos, J., & Rubio-Gámez, M. D. C. (2019). Reclaimed polymers as asphalt binder modifiers for more sustainable roads: A Review. Sustainability, 11(3), 646. http://hdl.handle.net/10481/59065 10.3390/su11030646 eng http://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España MDPI