ABSTRACT

Reflective cracking is usually caused by discontinuities, such as joints, in the layers under the asphalt surface. Ravelling is the result of aggregate course material loss in the surface and rutting is linked to surface bowls located in the wheel path. This paper assesses the capability of the encapsulated bitumen rejuvenators addition to stone mastic asphalt mixtures to mitigate the reflective cracking, particle loss and rutting performance. Capsules containing asphalt resulted in 23% increase in the healing index, 1.5% reduction in mass loss, and negligible ruth depths.