A9 near Munich

As part of an innovative road construction project, rubber modification of asphalt/bitumen using GRM was successfully implemented on the A9 motorway near Munich. A total area of an impressive 360,000 m² was paved with rubber-modified asphalt – increasing both the pavement’s durability and traffic safety.

Porous Asphalt PA 8 for Optimal Results

For this project, porous asphalt PA 8 was selected due to its excellent performance characteristics. The paving was carried out in two phases of 40 hours each, with 180,000 m² of asphalt laid in each phase. In total, approximately 20,000 tons of asphalt were produced, each containing around 425 tons of GRM.

Benefits of Rubber Modification:

• Increased durability: Rubber-modified asphalt is more resistant to weathering and mechanical stress due to its favorable aging properties.
• Improved noise reduction: Porous asphalt reduces traffic noise, enhancing driving comfort.
• Sustainability: The use of GRM introduces recycled materials into the construction process, contributing to waste reduction.

Conclusion: Rubber as a sustainable road construction practice

The successful application of rubber modification on the A9 near Munich demonstrates modern and sustainable road construction in action. With the use of porous asphalt PA 8 and the integration of GRM, the project not only improved pavement quality but also made a significant contribution to the environmental performance of the construction process.