From industrial CO₂ to construction materials

The Carbon4Minerals project is exploring how CO₂ from industrial flue gases can be used in the production of low-carbon building material intermediates and construction end-products. The concept focuses on sectors where process-related CO₂ emissions remain difficult to avoid, including the brick, steel and cement industries.

Within the project, CO₂ is captured from industrial flue gases using wet and solid amine technologies. The captured CO₂ can then be combined with secondary raw materials, such as steel slags and production, construction and demolition waste, to support the development of new low-carbon cement alternatives and supplementary cementitious materials.

This pathway enables the production of carbonation clinker and CO₂-negative SCMs, while also supporting the development of low-carbon construction products. These include CO₂-negative facing bricks and pavers, CO₂-negative facade panels and roof tiles, and low-carbon fibre cement products.

By linking carbon capture with the circular use of secondary raw materials, Carbon4Minerals contributes to the development of more resource-efficient and climate-oriented construction value chains. The project’s industrial pilots will help demonstrate these technologies across different stages of the process, from CO₂ capture to final construction products.