This innovation project aims to develop carbon-negative precast building materials, such as masonry blocks. CO₂ captured from lime kiln exhaust gases is combined with recycled slag residues from stainless-steel production using Carbstone Technology®. Through this process, the CO₂ would be permanently stored within the building blocks.
The project began in 2021 and is scheduled to run until 2027, with pilot operations starting in 2025 under the project name CO2Bloc. The consortium includes Lhoist, Prefer Construct, Orbix Solutions, and initially Fluxys Belgium. The project site is located in Hermalle-sous-Huy, Belgium.
Funding comes from the EU Innovation Fund Small Scale and from the Belgian COOTECH program for CO2Bloc.
Major challenges have emerged in this innovation project regarding both the technical solution and overall business viability, and these need to be carefully assessed before moving forward.
Please contact us for more information on the status and next steps via info@lhoist.com.