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A comment on Concrete: The material that's 'too vast to imagine'. Parent comment

Re:Concrete: The material that's 'too vast to imagine' by XorNot on Tuesday June 29, 2021 @10:04AM (#27675901)
Concrete though is big and stationary. It needs heat, not combustion to make, so it is amenable to fuel source switching.

For me it's in the bucket of "problems which don't matter till we solve electricity". Clean, cheap electricity == clean, cheap concrete.

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Re:Concrete: The material that's 'too vast to imagine' by phreeza on Tuesday June 29, 2021 @10:24AM (#27676196)
The majority of the CO2 emissions from concrete come from the production chemical reaction, not from the heat generation, though.
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Re:Concrete: The material that's 'too vast to imagine' by XorNot on Tuesday June 29, 2021 @11:28AM (#27677256)
Wikipedia [1] suggests 50% is from calcination and 40% from burning fuel. There's plenty of room for reductions on the fuel side.

[1]https://en.wikipedia.org/wiki/Environmental_impact_of_concre...

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