Efficient in cramped construction sites
An H 7i VIO was used to prepare the sub-surface when widening a heavily used main road in Leubsdorf am Rhein in Germany. The construction site was sandwiched between the banks of the Rhine and one of the most important railway lines in Germany. Once the soil on the dam between the railway line and the banks of the Rhine had been removed to a depth of around 1.50 m, the construction company Günter Alsdorf GmbH & Co. KG used their new H 7i VIO to skilfully build up the coarse- and mixed-particle soil into several layers, each with a thickness of 25 cm. Machine operator Philipp Zeiler was immediately impressed with the compact, extremely short compactor: "The H 7i is extremely easy to handle and operates perfectly. It may be small, but you have a lot of space." Added to this is excellent visibility, which is made possible thanks to the bevelled crossbeam and suitably designed rear vehicle. The drive via drive engines creates great ground clearance; the short wheelbase combined with the three-point articulation also results in a small turning circle. In short: The best prerequisites for use on the banks of the Rhine.
Compaction in a sensitive environment
To create the dam right beside the street and the railway line, low-vibration compaction was also important. The VIO compactor therefore mostly worked in oscillation mode for this. As is the case on all VIO rollers from HAMM, the operator can switch from vibration mode to oscillation mode with the touch of a button from the operator platform – even while driving. However, the operator recognises even more strengths of the compaction with oscillation: "I usually compacted loose material with oscillation and therefore avoided moisture being pulled up. I also used oscillation when I wanted a particularly flat surface." Preventing decomposition and creating flat surfaces are just some of the many advantages of compaction with oscillation. At the construction site in Leubsdorf am Rhein, it also became clear "that the HAMM rollers also had a more pleasant noise level when compared to other, comparable models."