Mechanical recycling of End Of Life concrete into high-grade aggregates

Themes: Social impact, Materials

Market ready application

A TRL is a measure to indicate the matureness of a developing technology. When an innovative idea is discovered it is often not directly suitable for application. Usually such novel idea is subjected to further experimentation, testing and prototyping before it can be implemented. The image below shows how to read TRL’s to categorise the innovative ideas.

Click to enlarge


Increasing amounts of concrete waste, lack of dumping places, saving natural resources and reducing CO2 emissions, are the main driving forces for finding a sustainable and economic way for concrete recycling.


The C2CA Project aims at an innovative, cost-effective and environmental friendly approach for in situ recycling of high-volume end of life concrete stream into prime-grade aggregates and cement.


The feasibility of this recycling process was examined in a demonstration project involving 20,000 tons of EOL concrete. Results show that the +4 mm recycled aggregate compares favourably with natural aggregate.

Somayeh Lotfi


Prof. Peter Rem