Re:Instant stone (just add water) (2018)
by phinnaeus on Sunday November 17, 2019 @07:16PM
(#21560993)
Very recently indeed, this is mentioned in the linked 2018 article. I assume there is some other secret sauce or it wouldn't be so secret.
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Re:Instant stone (just add water) (2018)
by jasoncrawford on Sunday November 17, 2019 @07:22PM
(#21561017)
The fact that they were using volcanic ash is nothing new. I mean, Vitruvius basically wrote down that it was volcanic ash.
The specific chemistry of how the specific silicates interact with seawater and how that forms new compounds is a new discovery.