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> A startup called CarbiCrete is also developing carbon-negative concrete. Instead of cement, the company uses waste slag from steel-making in its concrete mix,
by clnq 3y ago
> A startup called CarbiCrete is also developing carbon-negative concrete. Instead of cement, the company uses waste slag from steel-making in its concrete mix, and uses carbon dioxide captured from industrial plants to cure the concrete. One downside is that the concrete has to be pre-formed and cannot be poured and set on site.
What a big obstacle to adoption — too many building techniques rely on on-site pouring, I hope they can engineer some solution.
- yetihehe 3y agoI've used a lot of prefab concrete blocks for my house. For foundations - big concrete bricks, for ceilings - big prefabricated long strips with rebar. Of course, not all, but it's most of concrete used in my house. You could also make small pavement bricks from that, it doesn't need to be poured in place and uses noticeable amounts of concrete, it's used a lot in Europe.
- Sharlin 3y agoMost multi-storey buildings are made from prefab elements at least where I'm from. Making those carbon-neutral would be a big deal, even if the concrete couldn't be used for bridges and whatnot.