On: Instant stone (just add water) (2018)

[phinnaeus]

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.

[jasoncrawford → phinnaeus]

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.

[RRWagner → jasoncrawford]

This is all explained in the books of Joseph Davidovits.