Physics – The Lure of Cement

One approach is to improve energy efficiency at cement plants, so that the kilns used to make clinker require less power to operate. Another is to use biomass or waste fuels, rather than fossil fuels, to power the kilns. In the future, carbon-capture technologies at plants could also help.

However, to make a bigger impact now, the amount of clinker in cement needs to be reduced, the amount of cement in concrete—which is cement combined with water, sand, and gravel, and is the material used to make buildings and roads—needs to go down, or each individual building project needs to use less concrete. That last solution is one I recently started looking into.

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