>>>>I've been upstaged....a recent discovery. I guess I don't spend enough time reading about concrete.
https://news.mit.edu/2023/roman-conc...ime-casts-0106
https://news.mit.edu/2023/roman-conc...ime-casts-0106
The high point of Rome is indeed impressive. I always think back to that quotation from "A World Lit Only by Fire":
It says much about the Middle Ages that in the year 1500, after a thousand years of neglect, the roads built by the Romans were still the best ones on the continent.