aerogel-it participates in BIOVIPWALL project

The aerogel-it team is very happy to be part of the BIOVIPWALL open call project funded by iClimabuilt, an EC Horizon Europe project.

Prefab sandwich wall elements are interesting for both new construction as well as for serial renovation of existing buildings as they can be mass-produced in factories. This enables leveraging standardization and automatization for higher efficiency compared to local construction on the construction site.

But currently, almost exclusively steel-reinforced concrete is used which requires minimum thickness to protect the steel reinforcement from corrosion and structural failure over time. The additional concrete for protection of the steel reinforcement leads to additional CO₂ emissions during production and transportation.

When using carbon-reinforced concrete (carbon concrete) instead of conventional steel-reinforced concrete, the carbon reinforcement no longer needs to be protected against corrosion. Therefore, the concrete layer can be reduced in thickness which saves material and transport cost, reducing CO₂ footprint and reducing CO₂ emissions for transportation. Thinner carbon concrete elements also save valuable space in buildings.

Then thermal insulation is required for the envelope, and vacuum insulation panels (VIPs) are the highest-performing thermal insulation materials. When combined with VIPs, carbon concrete wall construction gives access to slimmest wall designs: The overall wall thickness can be reduced from ca. 40 cm to ca. 20 cm or less – or by 50% or more!

Within the BIOVIPWALL project, together with our partner va-Q-tec and the iClimabuilt service providers we will develop and test a new prefab sandwich wall system based on carbon concrete in combination with bioaerogel VIPs such as our cellulose bioaerogel. We will prepare various materials and sandwich elements for test campaigns by iClimabuilt members as well as for demonstration purposes including integration and monitoring in a building. Based on our own calculations, we expect that a substantial CO2 footprint reduction is possible. Stay tuned!