Thread by @Manamind1

"The winner was CarbonCure, which showed it can inject CO2 into water used to wash out cement trucks, for a mix that makes stronger concrete, according to XPRIZE."

@elonmusk @PeterDiamandis can you send a link that supports this claim. I can't find it 🙏

phys.org/news/2021-04-w…

I think I got it: "The mix design was to achieve 35 MPa at 28 days. The mix was 308 kg cement + 77 kg slag per m^3 concrete". That's 385kg total cementitious incl slag. That's large, yet only 35C? 🤔

And the brown bars seem to contradict your claims? 🧐

doi.org/10.1016/j.cemc…

Please be very careful making claims. RAPID carbonation in concrete is hugely controversial as it promotes CHALK. You understand? That means WEAKNESS. Hence your TINY fizzy dosage

...And why your paper I cited uses SLAG to BOOST strength gain. Yes? 🧐

FFS please up your game 👍

@threadreaderapp unroll