Effect of mineral fillers on ageing of bituminous mastics

Past research has shown that the ageing process of bitumen is not solely a function type itself, but rather, added effects have been identified attributed to presence fillers. Nevertheless, contradicting results exist between various studies with respect implications fillers on bitumen. The present study aims develop better understanding regarding role in Bitumen-filler blends (mastics) were prepared, according single design protocol, and resulting materials along pure subjected accelerated laboratory by means pressure vessel. effect was studied using dynamic shear tests infrared spectroscopy measurements. revealed ability mitigate age-hardening bitumen, despite fact formation carbonyls matrix observed. Oxygen diffusion adsorption mechanisms found be responsible for observed favourable while gradation, mineralogical/elemental composition and, some extent, specific surface area where established as prevailing fillers’ properties regulating oxidation mechanisms. investigation recovered binders from aged mastics did lead any further insight Instead, features which manifest extraction recovery may suitable approach address question this study.