Incorporation of steel slag and reclaimed asphalt into pavement surface layers

• I. Rocha Segundo ^[1] ; E. Freitas ^[1] ; V. Castelo Branco ^[2] ; S. Landi ^[1] ; M.F. Costa ^[1] ; J. Carneiro ^[1]
  1. [1] Universidade do Minho

     Universidade do Minho

     Braga (São José de São Lázaro), Portugal

     
  2. [2] Universidade Federal do Ceará

     Universidade Federal do Ceará

     Brasil

     
• Localización: Wastes: solutions, treatments and opportunities III / Cândida Vilarinho (dir.), Fernando Castro (dir.), Margarida Gonçalves Neto (dir.), Ana Luísa Fernando (dir.), 2020, ISBN 9780367257774, págs. 457-462
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • There is an increasing concern about the recycling and reuse of wastes in different areas. This research aims to analyze the technical viability of the use of Reclaimed Asphalt Pavement (RAP) and Steel Slags (SS) for the composition of asphalt mixtures for surface layers. Therefore, three asphalt mixtures AC 10 were designed: without recycled materials (R), with 30% of RAP (F) and with 30% of SS (A). They were mechanically and superficially assessed. Their water sensitivity and the permanent deformation were similar. The mixture A presented higher stiffness modulus and lower fatigue resistance when compared to the other ones. The best sound absorption and mechanical impedance found were for A and the worst ones were for F. Mixture A had smoother macrotexture if compared to the other mixtures. The asphalt mixtures had similar friction. It can be concluded that these wastes can be incorporated in asphalt mixtures for surface layers.