Differences in the Ageing Behavior of Asphalt Pavements with Porous and Stone Mastic Asphalt Mixtures

The degradation of bituminous materials as a result ageing has significant effect on asphalt pavement performance. In this study, one porous (PA) section and stone mastic (SMA) were designed constructed in 2014 exposed to the actual environmental condition. To study change pavement’s mechanical properties, cores collected from both test sections annually. stiffness modulus was determined via cyclic indirect tensile tests. investigate behavior across depth, bitumen extracted recovered 13 mm slices along depths cores. chemical composition rheological properties field-recovered bitumen, that original aged standard short- long-term protocols, investigated by means Fourier Transform Infrared (FTIR) spectrometer Dynamic Shear Rheometer. results show mineral aggregate packing, therefore air-void distribution connectivity, sensitivity pavements with time significant, changes PA mixture greater than SMA mixture. addition, there is an gradient inside layer, however, mainly happens surface layer. Finally, laboratory-aged demonstrate weak relation between field laboratory protocols.