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Title: Laboratory performance of asphalt rubber mixtures
Authors: Fontes, Liseane
Trichês, Glicério
Pais, Jorge
Pereira, Paulo
Minhoto, Manuel
Keywords: Asphalt rubber
Permanent deformation
Issue Date: 2009
Publisher: National Asphalt Pavement Association
Citation: Fontes, Liseane P.T.L.; Trichês, Glicério; Pais, Jorge C.; Pereira, Paulo A.A.; Minhoto, Manuel J.C. (2009) - Laboratory performance of asphalt rubber mixtures. In Asphalt Rubber Conference Proceedings. Nanjig, China.
Abstract: Asphalt rubber mixtures are one of the most promising techniques to extend the service life of asphalt pavement overlays. Asphalt rubber binder is composed of crumb rubber from reclaimed tires and conventional asphalt. The asphalt rubber binder can be obtained through wet process in two different systems: tire rubber modified asphalt binder (produced at industrial plants) and continuous blending (produced in asphalt plants). This study presents a laboratory evaluation of asphalt rubber mixtures produced with different asphalt rubber binders, using gap and dense gradations. The mechanical behaviour of the mixtures studied was established through several laboratory tests (stiffness, fatigue and permanent deformation). Moreover, the morphologies of the crumb rubber and of the asphalt rubber binder were analysed through scanning micrographs. The rheology of the asphalt rubber binder was characterised in order to predict the mechanical behaviour of asphalt rubber mixtures.
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Appears in Collections:DCCP - Artigos em Proceedings Não Indexados ao ISI/Scopus

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