SMA asphalt mastic asphalt mixture is a discontinuous graded structure with relatively large aggregate voids and relatively high asphalt content. When a tire roller is used, the mixture may experience pumping, where the asphalt is pumped to the surface, resulting in a rough texture and potential bleeding on the road surface.
Additionally, the kneading action of the tire roller may cause coarse aggregates to float to the surface, affecting the structural depth of the pavement and compromising its smoothness and uniformity.
