Highways A71/A72, Germany

Development of a special dynamic compaction application to comply with the project's characeristics

The new alignment for the construction of A71 and A72 motorways in Germany had to go through areas where active collapse sinkholes could be encountered. A special application of dynamic compaction was developed on these projects by using very high energy pounding with the patented MARS (Menard Automatic Release system) free fall system. Up to 6 m deep crater were created by this treatment allowing to collapse the potential sinkhole.