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The company uses CO2 sourced from industrial emitters. The technology is retrofitted into existing concrete plants, and equipment injects the CO2 into a hopper or central mixer.

“Once injected into the wet concrete mix, the CO2 reacts with calcium ions from cement to form a nano-sized calcium carbonate mineral that becomes permanently embedded in the concrete,” the Halifax, Nova Scotia, company explains on its website.

Read more at: https://www.forbes.com/sites/jeffkart/2019/02/23/carboncure-technology-says-goodbye-to-carbon-dioxide-hello-to-greener-concrete/#d93a13673110