carbon free calcium rich basalt may help reduce emissions from cement industry by 80 pc study

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Extracted by our AI model from this article and related public sources — not direct quotes from the publisher.

• Cement production contributes 8% of global CO2 emissions.
• Using basalt instead of limestone could reduce CO2 emissions by over 80%.
• Emissions could be as low as 43-59 kg CO2 per tonne of cement.
• Basalt reserves are sufficient for hundreds of thousands of years at current production levels.
• The process requires 40% less energy than conventional cement production.