Research project Research into new CO2-reduced concrete mixes

From CarStorCon Technologies

RCC2 research project: CO2 savings in construction with of up to 80 percent possible with innovative concrete

Vienna, 14 November 2023 - The Austrian research study RCC2 (Reduced Carbon
Concrete) investigated the potential of innovative concrete formulations to decarbonize
concrete. The broad-based consortium presents ways in which CO2-
reduced and even climate-neutral concrete can be established as the new state of the art at
The RCC2 research project involved a cross-industry consortium consisting of
STRABAG Real Estate, Doka, Romm ZT, Mischek ZT, bauXund, CarStorCon Technologies, MPA
Hartl and the concrete manufacturers Asamer, Holcim and Wopfinger. The common goal was to overcome the
technical, legal and economic hurdles to establishing CO2-reduced
performance concrete and to pave the way for a "climate-friendly" building material on Austria's
construction sites.
In the predecessor project RCC (Reduced Carbon Concrete), the consortium already investigated the practical use of clinker-reduced concrete mixes on construction sites in
2021. Compared to
standard concrete, these so-called RCC concretes have a greatly reduced carbon footprint,
but have one disadvantage: they take longer to harden, especially at low
outside temperatures. In practice, this leads to an extension of the construction time and higher
costs, as, for example, stripping can be delayed and the formwork material is in use on the
construction site for longer.