Influence of unserviceable tires’ rubber on the mechanical performance of hot mix asphalt

• Published in: Revista ALCONPAT
• Main Authors: Camila G. Luz Nunes, Pedro Henrique dos Santos Pereira, Ricardo Almeida de Melo, John Kennedy Guedes Rodrigues, Lêda Christiane de Figueirêdo Lopes Lucena
• Format: Article
• Language: English
• Published: Asociación Latinoamericana de Control de Calidad, Patología y Recuperación de la Construcción 2022-09-01
• Subjects: hot mix asphalt; asphalt-rubber; Marshall; Superpave
• Online Access: https://www.revistaalconpat.org/index.php/RA/article/view/575
• ISSN: 2007-6835

This work aimed to optimize the production of hot mix asphalt (HMA) from the use of asphalt-rubber. For that, the mechanical performance of asphalt mixtures produced with different binders was evaluated: commercial asphalt-rubber (AR08), asphalt crumb rubber 10% (AR10) and 15% (AR15), and conventional asphalt (PEN 50-70). For the composition of these mixtures, the optimum asphalt contents were defined by the Marshall design. To carry out the mechanical tests, specimens molded with Marshall and Superpave compactors were tested. From the results obtained, it was verified that AR08 and AR10 asphaltic mixtures, compacted with Superpave, carried out the best mechanical performance. However, the AR08 binder is already available on the market, which facilitates its usage in paving works