Different solutions for road pavement recycling

Abstract

Recycling of materials is becoming increasingly important for the Society due to the depletion of natural resources and the need to reduce the production of waste and its disposal in landfills. The present chapter comprises a series of studies carried out by the authors on different road pavement recycling technologies. Thus, cold in place recycling with cement or hot/warm in plant recycling procedures were evaluated and the performance of the resulting materials was assessed. Furthermore, the incorporation of other waste materials, used to improve the mechanical properties of recycled asphalt mixtures, was also analyzed and the performance of such mixtures was compared to that of conventional asphalt mixtures. It is really interesting that the different case studies presented came into similar conclusions, although the road pavement recycling solutions are quite diverse. Actually, all those case studies concluded that the incorporation of reclaimed asphalt pavement material in new recycled mixtures is technically possible and that the resulting solution can have a good performance and durability. The work summarized in the present chapter can be used by the scientific community to promote the increase on the use of recycling technologies in the particular industrial area of road construction and rehabilitation.