Solarpunk technology

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

submitted 1 week ago by poVoq@slrpnk.net to c/technology@slrpnk.net

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[–] Skua@kbin.earth 12 points 1 week 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

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