Innovative light-coloured porous asphalt for low-impact pavements: A laboratory investigation

In recent years, research is pushing toward more sustainable solutions in the road sector such as cool pavement and eco-friendly paving components. Cool pavements are advanced pavement technologies characterized by lower surface temperature thanks to the use of light-coloured binders and an open-graded structure. In this framework, the present study intends to provide a laboratory characterization of two different open-graded wearing courses produced with Construction and Demolition waste (CDW) aggregates and virgin aggregates and with a transparent resin-based binder. The final aim of the research is to provide scientific evidence on the possible application of the adopted resin-based transparent binder with light-coloured aggregates for opengraded wearing courses in order to minimize the Urban Heat Island phenomenon. The results show that the addition of 50% of CDW aggregates to the porous asphalt enhances the abrasion resistance and the mechanical performance of the mixture.