During 2020, slip roads to and from motorways all over the federal state of Hessen in Germany have been paved using microsurfacing to improve road grip. Because of the heavy traffic, especially in the Rhine-Main area, the contractors were forced to perform the work largely at night, which posed major challenges for both employees and machines, but also for construction materials.
With weather conditions that were very challenging at times, and narrow time windows before traffic had to be re-admitted, there were tough demands on the bitumen emulsion. Possehl Spezialbau GmbH, which specialises in the maintenance of asphalt pavements, relied on the tried and tested system from Innobit GmbH.
Even at night-time temperatures as low as 9 °C and in the pouring rain, the emulsion, with bitumen from Nynas, worked excellently. Thanks to optimal work processes at the construction site and the microsurfacing materials selected, all the slip roads could be completed within the specified time frames and above all in time to re-open the road as planned.
The choice of microsurfacing means that the slip roads can once more offer good grip, even when the road is wet. At the same time, the underlying asphalt surface is protected against additional damage, thanks to the method selected. The client has now confirmed that a major upgrading of the road network can be deferred by 8 to 10 years.