Just saw this video of Solidia’s CEO at 4 hrs 30 min in.
My main takeaway: “Our new technology for ready-mix is in testing in infrastructure applications. We’ve pushed our research even further to develop a concrete that may become a carbon sink. That means that we will consume more CO2 than is emitted during cement production. Since we can’t use CO2 gas at a construction site, we knew we had to deliver it to our concrete in either a solid or liquid form, so we’ve been partnering with companies that are taking waste CO2 and transforming it into a useful family of chemicals like oxylic acid or citric acid, the same one you use in orange juice. When that acid reacts with our cement, we can pack in as much as four times more carbon in the concrete, making it carbon negative.”