Viability of the use of construction and demolition debris in hot mix asphalt

• Autores: Ignacio Pérez Pérez, Mar Toledano Prados, Juan Gallego Medina
• Localización: Bearing capacity of roads, railways and airfields: proceedings of the 8th International Conference on the Bearing Capacity of Roads, Railways and Airfields, Champaign, Illinois, USA, June 29-July 2, 2009 / Erol Tutulumluer (dir.), Imad L. Al-Qadi (dir.), Vol. 1, 2009, ISBN 9780415804325, págs. 487-494
• Idioma: inglés
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• Resumen

  • This work evaluates resistance to plastic deformation and cracking of two hot asphalt mixtures made with recycled aggregates from construction and demolition debris.

    On the basis of this study it was inferred that the samples designed with recycled aggregates result in a stiffer mixture and are more resistant to plastic deformation. From the standpoint of fatigue behaviour, however, they present a lower fatigue life for a given deformation amplitude. Finally, a multi-layered elastic-linear model was used to determine the variation in the service life of a section of pavement earmarked for roads with low traffic volumes when layers containing recycled aggregates are added. The viability of the use of construction and demolition debris in hot asphalt mixtures was verified, since the number of standard axles that the section can carry is greater than the predicted number of standard axles that will be carried during the service life of the pavement.