CarbonBuilt’s Reversa

CarbonBuilt’s Reversa™ process includes innovations to both the concrete mix design and its curing process. On the formulation side, we introduce portlandite (a widely-available commodity chemical; also known as calcium hydroxide or hydrated lime), reduce the usage of traditional Portland cement and increase the use of low-cost and low-carbon supplementary cementitious and filler materials. Concrete products are then formed using the same processes and equipment that are used today.

After forming, the concrete products are cured with CO₂ using a process that does not require expensive capture, compression or purification of the CO₂, high temperature or elevated pressure.  This flexibility enables use of a wide range of CO₂ containing streams ranging from point-source or distributed emissions that can be used directly, to merchant gas sourced from such sources, to emerging direct air capture technologies.

The Reversa process reduces emissions by at least 70%, and potentially more than 100%, through a combination of utilization (permanently embedding CO₂ into the concrete) and avoidance (reducing CO₂ emissions associated with the raw materials).