Constructing better roads with asphalt rubber

Jorge C. Pais 1 , Liseane P. Thives 2 , Paulo A. A. Pereirâ 1 , and Glicério Trichês 2
  • 1 University of Minho, Department of Civil Engineering, Campus of Azurém, 4800-058 Guimarães, Portugal;
  • 2 University Federal of Santa Catarina, Department of Civil Engineering, Rua João Pio Duarte, 88040 970 Florianópolis, Santa Catarina, Brazil.


Brazilians mixtures containing asphalt rubber were evaluated by mechanical laboratory tests. A conventional mixture with asphalt CAP-50/70 was produced as a mixture control. With the aim of compare the Brazilians mixtures performance, a Portuguese asphalt rubber mixture was tested as well. The testing set involved the determination of the mechanical properties, fatigue and permanent deformation, of asphalt rubber produced by wet process through two different systems: continuous blend and terminal blend. The asphalt rubber morphology was evaluated in order to determine the compatibility of the systems. The asphalt rubber mixtures exhibit good resistance to permanent deformation and prolonged fatigue life in relation to mixture control. Therefore it is concluded that the application of asphalt rubber alters the characteristics of asphalt mixture in a very beneficial way.

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