Valutazione delle prestazioni e valutazione del ciclo di vita (LCA) di miscele bituminose composte da materiali riciclati per strade a basso volume di traffico

The implementation of sustainable methodologies in road pavement engineering requires a systematic evaluation of recycled materials as viable alternatives to virgin aggregates and bitumen. This thesis investigates the incorporation of recycled materials, such as steel slag and reclaimed asphalt pavement into bituminous mixtures designed for low-volume roads. The experimental program was conducted in accordance with European standards to assess the physical, volumetric, and mechanical performance of the mixtures. Specimens were produced through gyratory compaction and subsequently tested for volumetric properties, stiffness modulus, indirect tensile strength, and water sensitivity. The laboratory results constituted the basis for a Life Cycle Assessment aimed at quantifying the environmental performance of the mixtures, with particular reference to carbon footprint reduction compared to conventional asphalt mixtures. The findings indicate that the use of recycled constituents represents a technically feasible and environmentally efficient solution for more sustainable pavement construction.