Roman concrete, made with volcanic ash from Vesuvius, became stronger when exposed to seawater over time, allowing ancient structures to survive underwater for 2,000 years, while modern concrete begins cracking within decades.
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Why Roman Concrete Won’t Die 🏛️Añadido:
Roman concrete survived underwater for 2,000 years. Modern concrete starts cracking within just decades.
Researchers opened an ancient Roman harbor wall. Inside, they discovered something engineers couldn't explain.
Seawater was [music] actually making the concrete stronger. The secret came from volcanic ash near Vesuvius. Watch the related video for the full mystery.
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