Producing hydraulically bound base layers
In the construction of new roads, airports or other traffic surfaces, hydraulically bound base layers are frequently paved on top of the levelled and compacted subgrade. Graded new mineral aggregate is mixed with cement and water to produce the specified material mix.
When Wirtgen stabilizers or recyclers are used to produce the base layer, the mineral aggregate mix is spread on the subgrade level in the specified thickness. The recycler then homogeneously mixes in specified quantities of cement and water in adjacent working cuts. The cement is pre-spread onto the surface ahead of the recycler or directly injected as a slurry into the recycler's mixing chamber. The operation is completed by final levelling and compaction.
Rehabilitating granular gravel roads
Cold recycling with binding agents is ideally suited for rehabilitating granular gravel roads with poor bearing capacity. The cold recycler scarifies the granular material in adjacent working cuts, recycling it at the same time by adding binding agents and water. The recycling operation is completed by final levelling and compaction, producing a bound material layer with significantly improved bearing capacity.
Recycling damaged roads with cement
Mixing cement into a granulated blend of asphalt and gravel results in a highly stable construction material that meets the requirements of a hydraulically bound base layer.
The existing road pavement is milled and granulated by the mobile recycler in a single working operation, while cement and water are mixed in simultaneously by the machine's milling and mixing rotor. The recycling operation requires neither the source material nor the recycled construction material mix to be transported. Depending on the type of cold recycler used, the recycled material is placed by a paving screed integrated into the recycler or by graders and rollers.
Recycling damaged roads with foamed bitumen and cement
Bituminous/hydraulically bound base layers of superior quality are produced by mixing foamed bitumen and cement into a granulated blend of asphalt and/or gravel material.
The cement is either pre-spread onto the surface ahead of the cold recycler or injected as a slurry into the recycler's milling and mixing chamber.
