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this post was submitted on 26 Jun 2024
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The problem hasn't been "you can't do it" but "architects and engineers don't have enough experience with it to trust it, so they don't use it" — a federal government purchasing program can fix that.
You literally cant do it, its a chemical reaction that outputs co2. In the same way you cant run a combustion engine without producing co2.
You can use a different chemistry to make a hard substance. There are a ton of options which look good in tests, and pretty much nobody uses them.
You are reaching far too deep to try and imagine this somehow turning out alright for the climate. The hundreds of billions are budgeted already. Highway construction is happening. Conventional concrete is being used. Truck and SUV sales are increasing to fill the new highways.
Vehicle sales remain below pre-pandemic levels
I don't deny that conventional concrete is still being used at scale. It's something like 1% of US emissions.