A team of Swiss materials giant Holcim, Swedish startup Paebbl and German contractor Goldbeck has poured the first industrial floor slab made with carbon dioxide.
The slab poured for an e-commerce logistics centre in south Germany cut the amount of traditional cement used by 15%.
The Paebbl Rebond material replaces some traditional cement with carbon dioxide turned into a stable, light grey mineral powder composed primarily of magnesium carbonate and silicon dioxide by a mineralisation technology that mimics natural processes.
In this case, the 420-sq-m slab sequestered 886kg of CO2.
The project went from concept to pour in six months after tests on the material’s workability, air content and bleeding behaviour.
Bengt Steinbrecher, Holcim, said: “With this project we’ve proven how we can scale innovative technologies for a more sustainable built environment.
“It’s the result of a great collaboration with our partners, showing that construction innovation doesn’t happen in a vacuum, but through a collaborative ecosystem.”
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