Recycling of thermoplastic road markings

Important results from the project

The project has created conditions for recycling thermoplastic road markings by developing products and recycling processes and mapping the properties of the materials. The results show that up to 20% recycled material can be used without compromising function or safety, which was higher than the project´s initial target of 10%. Certification has begun and the project has laid a solid foundation for increased circularity and reduced climate impact in the transport sector.

Expected long term effects

The project´s results could have a major impact on how road markings are produced. If implemented widely, the results could lead to reduced material consumption and reduced waste. The long-term goal of establishing a system where in principle all thermoplastics can be recycled creates opportunities for a closed loop, where road markings are no longer considered waste but a reusable resource, which in turn could affect future procurements where recycled material becomes a natural requirement.

Approach and implementation

The project was carried out according to plan with material collection, analysis, recipe development and application. The project followed the plan, although some adjustments were required due to problems with finding a suitable object for mechanical milling. The cooperation within the project group worked well; short and regular meetings ensured rapid progress. No major obstacles arose, however, the quality variations in milled vs. water-blasted material provided insights for further research.