https://www.concrete.org/publications/internationalconcreteabstractsportal.aspx?m=details&id=51732773
Although normal portland cement is made from natural and recyclable materials its manufacture causes significant pollution, especially because of clinkerization
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https://www.lkabminerals.com/news/calcined-clay-cement-production/
Sep 1, 2025 - We have recently introduced a new Calcined Clay product to the UK market that will transform cement production. Click here to find out more!
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