Secondary raw materials are key in the circular economy. The concept itself is at the intersection of two circular principles: eliminating waste (by diverting waste flows to recycling and recovery plants) and maintaining the value of components. Secondary raw materials also contribute to strategic autonomy and resilience by reducing reliance on virgin raw materials which are not available domestically.

The ECESP website has plenty of examples of secondary raw materials. This series will shine a spotlight on some of them!

Secondary raw material concept: recycled rubber from End-of-Life tyres

Ecopneus is a non-profit consortium company created by the major tyre manufacturers in Italy in order to track, collect and process end-of-life tyres (ELT) so that they can meet their Extended Producer Responsibility obligations. It is also engaged in promoting applications for recycled rubber and raising awareness about recycling.

Ecopneus is responsible for a virtuous supply chain giving new purpose to ELTs. It handles approximately 200 000 tonnes of ELTs each year, converting them into granules and recycled rubber powder. These materials are used in playgrounds, sports surfaces, horse riding surfaces, acoustic insulation, asphalt, etc.

As a guarantee for manufacturers using this material and for end users, Ecopneus has introduced a certification for its rubber granules and powder.

In certain cases, using rubber recycled from ELTs instead of virgin rubber gives a better chemical and mechanical performance.

Applications of recycled rubber:

• Asphalt: adding recycled rubber powder to tarmac improves the tarmac's mechanical performance and reduces the noise produced by vehicles.
• Sports surfaces: Tyrefield is made from recycled rubber from ELTs. It is flexible, stands up to the weather and absorbs shocks well.
• Construction products: recycled rubber is very effective in acoustic insulation. Products made with it are resistant to mould, heat and humidity and stand up to direct sun and exposure to chemical agents. They are also very durable.
• Waste to energy: rubber has a very high calorific value and is largely burned in cement factories. Ashes and steel can be recovered and reused.