JOB REPORT

Seamless paving across the full carriageway width of 11 metres.

Pavement rehabilitation on the B47 federal road near Lorsch, Germany

The entire pavement structure – from the base layer all the way to the surface course – was in need of reconstruction on a 2.5 km long stretch of the four-lane B47 federal road near Lorsch in the German State of Hesse.

Owning a brand new Super 2100-2 paver from Vögele, the contractor decided to rehabilitate the asphalt pavement on the dual-lane carriageway separately in each direction across the full carriageway width. Hydraulically extending, bolt-on extensions enabled the SB 250 TP1 fixed-width, high-compaction screed from Vögele to achieve the specified varying paving widths of between 10 m and 11 m.

Using this type of heavy equipment was to pay off very soon. Thanks to the hydraulically extending, bolt-on extensions which enabled the paving width to be extended continuously and automatically by 75 cm on both sides of the screed, the entire section was completed without needing to modify the paving screed. The powerful Super 2100-2 paver, which has a maximum working width of 13 m, mastered the job with superior ease.

The large auger blades of 480 mm in diameter enabled the paving mix to be spread quickly and reliably across the full paving width of around 11 m, ensuring fast progress of the work and an adequate head of mix in front of the screed all the time.

The SB 250 TP1 high-compaction screed from Vögele could be depended on to achieve high pre-compaction values, laying the foundation for a perfect layer structure. Simple pressure regulation at the pressure bars allowed the high-compaction technology to be applied for all layers, including the surface course. The foundation had thus been laid for the DV 8 and GRW 18 rollers from Hamm to produce a final result that precisely met the requirements in terms of line and level.