Effect of Aged Binder Distribution on the Fracture Tolerance of Asphalt Mixtures with Reclaimed Asphalt Pavement

This study investigated the effect of distribution aged binder from reclaimed asphalt pavement (RAP) on fracture tolerance recycled mixtures. Two RAP sources (one coarse, one fine), virgin polymer-modified binder, and four contents (0 %, 20 30 40 %) were used to produce a total seven Fracture was assessed in terms energy density (FED) at three levels: interstitial component (IC) (composed effective fine aggregate fraction), mixture. Binder tests conducted measure FED blends recovered binder. IC direct tension employed determine FED. Finally, Superpave indirect tensile performed obtain decreased with increasing content levels (binder, IC, mixture). More importantly, mixture exhibited almost identical reductions relative terms, while reduction less significant level. finding indicates that full blending scenario artificially created level did not occur levels. Furthermore, coarse yielded greater than RAP, which substantiates gradation controls Consequently, lower portion for mixtures coarser resulted better tolerance. The application newly developed guideline determining maximum allowable confirmed this allows finer despite stiffer