Multi-scale evaluation of the effect of ras on the fracture properties of asphalt mixtures

A comprehensive laboratory testing program was conducted to examine the blending between recycled asphalt shingles (RAS) and virgin asphalt binders and to evaluate the effect of RAS on resistance of asphalt mixes to fatigue and low-temperature cracking. To this end, atomic force microscopy (AFM) was utilized to study the blending between the RAS and the virgin asphalt binders. Manufacturing waste RAS and tear-off RAS were used in this paper. A...