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NREL Researchers Pave the Way for Carbon-Negative Concrete
(www.nrel.gov)
This is a most excellent place for technology news and articles.
Roman concrete would cure by reacting with the carbon dioxide in the air, fixing it into the concrete. It doesn't sound like that's how this concrete works, but I wonder if a methodology like that would be carbon negative.
Isn’t the formula for Roman concrete unknown? I’m wondering how they can tell it is carbon negative
Yes, though a lot of research has been done to figure out its most important properties. A secret of its durability was just figured out last year. https://news.mit.edu/2023/roman-concrete-durability-lime-casts-0106
Interesting, thanks for sharing