Concrete has been described as the most destructive material on Earth. After water, its the most used substance in the world, with twice the usage of steel, wood, plastics, and aluminium combined. To manufacture all this concrete, more than 4 billion tonnes of cement are produced every year. According to the Chatham House think tank, that creates around 8% of all CO2 emissions more than whats caused by all the trucks across the globe. Cement makers urgently need to reduce this footprint. To meet the requirements of the Paris Agreement on climate change, the industry needs to cut emissions…

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