N344 Cycle Paths: Sustainably Renovated with TwistR®

With White Topping, a concrete layer is applied over the retained portion of the existing asphalt pavement. The existing asphalt serves as the foundation for the new surface. By reusing this structure, fewer new raw materials are required while transportation and material disposal are significantly reduced. The concrete layer provides a long service life and increased resistance to root-related damage.

For this project, a 12 cm thick concrete layer was installed and reinforced with a total of 7,000 kg of TwistR® HYBRID fibres. The combination of the existing asphalt foundation and fibre reinforcement allowed for a reduced concrete thickness. This lowered concrete consumption, reduced transport movements, and minimized associated CO₂ emissions.

The result is a low-maintenance cycle path with improved riding comfort and an expected service life of more than 20 years. By reusing the existing pavement structure, approximately 2,500 tonnes of asphalt did not need to be removed and disposed of. Around 1,900 tonnes of new concrete were used, while overall project costs were approximately 25% lower compared to traditional reconstruction methods.