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That Roman concrete recipe is way weirder than I thought
I was reading a paper about underwater Roman harbors last night and found out they used volcanic ash from the Bay of Naples mixed with lime and seawater to make concrete that actually gets stronger over time. The thing that got me is they didn't just stumble on it, they had specific quarries they kept going back to for the same ash, like a brand name. Modern tests show the mineral reactions keep forming for centuries, which is why those breakwaters in Italy are still standing after 2,000 years. I always figured old buildings just survived because they were thick, but this is a totally different chemistry than Portland cement. Does anyone know if researchers have actually tried copying the exact recipe for a modern project, or is it just too expensive to source that specific ash now? That part I couldn't find a clear answer on.
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phoenix_campbell8826d agoMost Upvoted
Kinda wild how the old school way of doing things often beats our shortcuts, right?
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