The split drum at a glance:
When negotiating corners and roundabouts and when performing tight steering manoeuvres, attempting to perform compaction without twin drums can lead to material being displaced and cracks forming on the surface. A split drum prevents this from occurring as the two halves rotate at different speeds. This minimises shear stress on asphalt, which prevents the material from being displaced and prevents cracks from forming. When compacting asphalt types that are particularly susceptible to being displaced, such as stone mastic asphalt or polymer-modified mixed material, this characteristic is a key factor affecting the compaction quality.