The asphalt pavement here is divided into three layers, the two layer with rubber tire roller for rolling, the surface layer is needed for the rubber roller, wherein the two layer is below AC, the top layer is SMA series.
So the asphalt pavement construction specification said.There is waterproof good, mainly depends on grading
Structural skeleton the structure of SMA determines the only double steel wheel to achieve the best effect.
The asphalt aggregate ratio and slag amount is more than 6% SMA can not use leather wheel, this is the result of the test section, the rub mastic floating that the depth of the surface structure reduces in this case leather wheel, skid resistance is reduced, skin wheel function is rubbing that is dense, so more suitable for dense graded mixture.
