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Don’t forget steel and concrete! Every pound of concrete releases 1 pound of CO2
by village-idiot 8y ago
Don’t forget steel and concrete! Every pound of concrete releases 1 pound of CO2
- Scoundreller 8y agoI think you mean cement. Cement is only 10-15% of concrete. The rest is water and rock/sand.
- village-idiot 8y agoYes, I do.
- philipkglass 8y agoHalf of that is from the chemical transformation of limestone to quicklime, and half of it is from the fuel energy currently used to drive the transformation: https://blogs.ei.columbia.edu/2012/05/09/emissions-from-the-cement-industry/ https://blogs.ei.columbia.edu/2012/05/09/emissions-from-the-... So if carbon-neutral fuels or clean electricity were substituted in the calcination process, the CO2 burden would be reduced by half without any additional downstream changes.