1. Before adjusting the screed, first check whether the overall screed is flat, whether the connecting parts are tight and clean, and whether the screed has a natural camber.
2. If the pavement without arch is to be paved, the pre-camber of the paver must be controlled. The control and adjustment of pre-camber means that when paving a single-width archless road, it must be straight. However, in practice, when the screed contacts the 150°C asphalt mixture during the paving process, the screed expands due to heat and causes the screed to Deformation occurs. Therefore, the pre-camber of the screed should be adjusted before paving so that it can meet the straight requirements when the paving is deformed by heat.
3. If the road is paved with an arch, the camber that should be adjusted is the design camber of the pavement plus the pre-camber.
