Swiss startup Neustark
The technology uses the principles of natural mineralization, accelerating them to capture carbon more efficiently from more than 1000 years to a few hours, increasing the average CO₂ sequestration fivefold. Neustark not only removes CO₂ from the atmosphere, but also retains about 10 kg in each cubic meter of recycled concrete aggregate.
With this technology, new carbon dioxide emissions can be reduced as the amount of cement in fresh concrete can be reduced to the regulatory minimum without any loss of quality. The concrete produced meets all standard quality criteria for usability, compressive strength, modulus of elasticity and durability.