Ancient Roman Concrete Is Stronger Than Modern Concrete

Roman concrete, particularly that used for harbors, has endured for over 2,000 years, outperforming many modern mixtures. Its durability is attributed to a unique blend of volcanic ash, lime, and seawater, which creates a robust, self-healing material that resists erosion.

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https://www.scientificamerican.com/article/roman-concrete-stands-test-of-time/

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Published: March 27, 2026
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History Weird Engineering Materials Science Roman Concrete Ancient Technology Durability Volcanic Ash

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