this post was submitted on 28 Jun 2024

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Solarpunk technology

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Modern construction using long-forgotten techniques (ethz.ch)

submitted 3 months ago by poVoq@slrpnk.net to c/technology@slrpnk.net

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[–] morphballganon@lemmy.world 1 points 3 months ago (1 children)

How does concrete emit CO2?

[–] Skua@kbin.earth 12 points 3 months ago

The process of making it involves cooking limestone until the carbon dioxide comes out, basically. Limestone is CaCO3 (one calcium, one carbon, three oxygen). Cement requires lime, which is CaO (one calcium, one oxygen). That leaves a C and two O, which stick together on the way out