Drilling core

Concrete

Steel fibers

Concrete is a typical composite material comprising gravel, sand cement stone. Concrete structures have limited lifetimes and they constantly need to be renewed, creating many millions of tonnes of used concrete each year throughout the world.

Some of this used concrete also contains substantial amounts of reinforcement steel. The use of fine steel fibers is increasing and - what is more - industrial concrete structures are often very heavily contaminated with substances that damage the environment.

To protect our natural resources, the usable materials contained in concrete ought to be recovered.

selFrag technology makes it possible to split the concrete into its components - gravel, sand, cement stone and steel - and to guarantee their quality for high-grade reuse. Steel fibers are selectively liberated and can easily be separated.

If concrete is contaminated, selective fragmentation allows the recovery of clean gravel and sand whilst the cotaminants are concentrated in the cement stone fraction. This significantly reduces the volume of material requiring disposal, and well over 60% can safely be reused.