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Concrete4Change develops technology to decarbonise cement and concrete by turning waste materials and CO2 into a reactive calcium carbonate material that strengthens concrete and reduces cement use. The process uses CO2 from cement and lime plant flue gas and calcium waste to permanently sequester CO2 in concrete, with no changes required to existing production processes. They partner with leading cement and concrete manufacturers to scale deployment, aiming to mitigate 2 billion tonnes of CO2 by 2040 and move toward net-zero or net-negative concrete.
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