History: Roman concrete outperforms any modern concrete: 2,000-y…

Question

Did you know? Roman concrete outperforms any modern concrete: 2,000-year-old harbours are still standing. The secret — volcanic ash plus seawater triggers a chemical reaction that makes the concrete stronger over time — was only cracked in 2017.

Accepted Answer

Roman concrete outperforms any modern concrete: 2,000-year-old harbours are still standing. The secret — volcanic ash plus seawater triggers a chemical reaction that makes the concrete stronger over time — was only cracked in 2017.

Romeins beton was beter dan elk modern beton: havens van 2.000 jaar oud staan nog. Het geheim — vulkaan-as plus zeewater veroorzaakt een chemische reactie waardoor het beton sterker wordt mét de jaren — werd pas in 2017 ontrafeld.

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