CO₂-negative DACCUSS house wall receives JEC Composites Innovation Award 2025
The prototype of a sustainable, CO₂-negative house wall was honoured with a JEC Composites Innovation Award 2025 at the JEC World, the leading trade fair for composite materials, in Paris. The wall was developed as part of the project “DACCUSS-Pre”, funded by the Federal Ministry of Education and Research (BMBF). The house wall element consists of Carbon-Fiber-Stone material (CFS®) on the outside, which combines hard rock, e.g. granite, and bio-based carbon fibres, and a biochar infill on the inside for insulation. Taking into account the CO2 sink effect from the weathering of production-related stone dust (EWS – enhanced weathering of stone) and the CO2-negative biochar infill, this creates a building component with a significantly negative carbon footprint (effective GWP value).
With a greenhouse gas reduction potential of 0.3 to 0.4 t CO2e per m2 of living space, the CFS house wall can make a substantial contribution to reducing greenhouse gas emissions from the construction sector in residential building as an alternative to conventional building elements made of CO₂-intensive concrete. With a complete switch to CFS construction and achievement of the Federal Government’s expansion targets for residential construction, a reduction in GHG emissions of approx. 13.3 million t CO2e per year could be achieved.
In addition to AHP, the following partners were involved in the joint project “DACCUSS-Pre”: TCT – TechnoCarbon Technologies GbR Munich, DITF – German Institutes of Textile and Fibre Research Denkendorf, LSL Labor für Stahl- und Leichtmetallbau GmbH Kissing, University of the Hanseatic City of Hamburg, DLR – the DLR Institute of Future Fuels Jülich. The invention of the CFS material and the CFS house wall originates from TCT (Kolja Kuse). As part of the joint project, AHP provided the techno-economic analysis (TEA) and the life cycle assessment (LCA).
AHP Correspondence address:
Prof. Dr.-Ing. Uwe Arnold
Knesebeckstraße 77, 10623 Berlin