this post was submitted on 28 Jun 2024
48 points (98.0% liked)

Solarpunk technology

2367 readers
2 users here now

Technology for a Solar-Punk future.

Airships and hydroponic farms...

founded 2 years ago
MODERATORS
poVoq
KeraKali
bot
48
Modern construction using long-forgotten techniques (ethz.ch)
submitted 4 months ago by poVoq to c/technology
12 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[โ€“] morphballganon@lemmy.world 1 points 4 months ago (1 children)

How does concrete emit CO2?

[โ€“] Skua@kbin.earth 12 points 4 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