Germany/Netherlands: CO2-sequestering supplementary cementitious materials (SCM) developer Paebbl has achieved the first pour of a concrete slab to feature its materials. The pour used concrete supplied by Holcim Kies and Beton, produced at its Offenburg ready-mix concrete plant in Germany, using 15% Paebbl Rebond C SCM in place of cement. Construction firm Goldbeck poured the 420m² floor slab as part of the construction of a logistics hall close to the batching plant in Baden-Württemberg. Paebbl said that the concrete’s embodied CO₂ is 200kg/m³, 13% below that of CEM II/B-M cement-based concrete. It conforms with C30/37 strength specifications, and works with conventional construction methods, without affecting construction timelines.
Paebbl produces Paebbl Rebond C at its Rotterdam plant in the Netherlands. The developer says that it brought the material from concept to completed pour in under six months.
Paebbl vice president products Ana Luisa Vaz said "This project shows what becomes possible when a material innovator, a building materials provider and a contractor align around a shared ambition. We can decarbonise fast with an aligned value chain."
Holcim’s venture capital arm, Holcim Maqer Ventures, head Bengt Steinbrecher said "This collaboration proves carbon-storing materials can be integrated seamlessly into our building solutions."
