Effects of RAP residual asphalt binder type, content and ageing on the mechanical behaviour of cold recycled cement-treated mixtures

This paper evaluates the effects of reclaimed asphalt pavement (RAP) residual binder characteristics on the mechanical behaviour of cold recycled cement-treated mixtures. RAP samples with different binder types (conventional, polymer and rubber), contents (4.5% and 5.5%) and ageing conditions were produced in laboratory. Cold recycled mixtures were prepared using the produced RAP, graded crushed stone and cement. The strength of cold recycled cement-treated mixtures is mainly affected by the binder type, while their stiffness is significantly affected not only by the binder type but by the binder content and ageing condition as well.