The demands on the surface quality of the upper layer and the wearing layer of asphalt roads has increased. As a matter of principle, for instance, the tarmacadam layers have to be gritted to increase the initial grip of the new road surface. This grit measure provides the traffic safety and so here it is essential to evenly distribute the grit.
The AMAZONE ZA-XS H twin disc spreader is especially well suited for gritting road surfaces. When mounted to a road roller the grit is spread into the upper zone of the still sufficiently hot top layer and is then immediately rolled. This process is carried out either directly behind the finisher or, at the latest, after the first roller process.