3 ms·
They covered a few products and techniques. Which one specifically are you talking about? The CarbiCrete one for example uses CO2 to cure the concrete, but doe
by ZeroGravitas 4y ago
They covered a few products and techniques. Which one specifically are you talking about?
The CarbiCrete one for example uses CO2 to cure the concrete, but doesn't use cement.
https://www.sciencedirect.com/science/article/abs/pii/S0959652616311374 https://www.sciencedirect.com/science/article/abs/pii/S09596...
> steel slag has shown the potential to replace cement as an alternative binder if carbonation activation is performed.
- mchannon 4y agoSince Elsevier is hiding the meat in that journal article, I can only go off what I read, but it looks identically flawed. • Compressive strength of normal concrete: 25-50MPa • Compressive strength of their slag concrete with 2h CO2 added: 12MPa • Compressive strength of their slag concrete with 24h CO2 added: 24.3MPa My takeaway: Using slag instead of cement = good idea. Using slag OR cement plus CO2 = bad idea.
- Faaak 4y agoBTW: You can access most scientific articles through sci-hub: https://sci-hub.ru/https://www.sciencedirect.com/science/article/abs/pii/S0959652616311374 https://sci-hub.ru/https://www.sciencedirect.com/science/art...
- digging 4y agoI'm following as a layperson, can you explain how to reach your takeaway from the bullets presented? It seems like #3 is almost identical to low-end normal concrete, so "good idea". Not sure what "24h" vs "2h" refers to though.
- Beltiras 4y agoDifference is that compressive strength generally decreases over time. Here we have a product where it increases over time. Changes the equation on how you build and maintain it.
- deleted 4y ago[deleted]