SIKA

Concrete recycling for reducing the CO₂ footprint in the construction industry

Figure: Sika

According to the German Federal Office of the Environment, 76.9 million tons of demolition rubble were generated in Germany in 2020, 63 million tons of which were recycled. The greater part of this is used in road construction and earthworks, only 15 million tons are used as aggregate in asphalt and concrete production.

Figure: Sika

With the reCO₂ver technology from Sika, the old concrete is broken down into individual parts gravel, sand and hardened cement paste powder and, in addition CO₂ is bound

Figure: Sika

The pilot plant from Sika consists of four modules, the size of an overseas container, as well as an upstream conveyor system and a downstream sieve module

Figure: Sika

The recycling plants from Sika will be of interest wherever there exists a market for recycling concrete and an infrastructure for sorting and crushing concrete waste

Figure: Sika

The reCO₂ver technology considerably simplifies concrete recycling, makes it economically more viable and more sustainable

Figure: Sika

Sika, a leading manufacturer of specialty chemicals, has developed a new recycling process for old concrete in which the recycled material is made available in higher quality than is the case with conventional recycling processes. By this process, the old concrete is broken down into the components gravel, sand and limestone powder in a simple and efficient process: one in which, in addition, approx. 15 kg of CO₂ per ton of the crushed demolition concrete material can be bound. The brand name of this innovation is reCO₂ver and significantly contributes to reducing the ecological footprint of...