Ancient Roman concrete, used in structures like the Pantheon, is stronger than modern concrete and becomes more durable over time through chemical reactions with seawater.
Notes on verification
Peer-reviewed research published in American Mineralogist (2017) and confirmed by materials scientists [2026-08-28 re-verify: verdict flipped to unverifiable] [2026-08-28 re-verified orphan: promoted with 7 independent source(s)] [2026-08-29 audit re-verified: 6 independent source(s)]
Sources
- https://www.sciencealert.com/why-2-000-year-old-roman-concrete-is-so-much-better-than-what-we-produce-today (reverify-primary)
- https://science.howstuffworks.com/why-ancient-roman-concrete-stronger-than-modern.htm (corroboration)
- https://als.lbl.gov/ancient-roman-secret-concrete-resilience-seawater/ (corroboration)
- https://www.smithsonianmag.com/smart-news/why-ancient-roman-concrete-so-strong-180963946/ (corroboration)
- https://www.zmescience.com/feature-post/natural-sciences/chemistry-articles/materials-1/roman-concrete-seawater-043432/ (corroboration)
- https://news.mit.edu/2023/roman-concrete-durability-lime-casts-0106 (corroboration)
- https://scienceinsights.org/why-roman-concrete-is-so-strong-and-gets-stronger-over-time/ (corroboration)