How seawater strengthens ancient Roman concrete - Unews
How seawater strengthens ancient Roman concrete - Unews
2017年2月24日
utah.edu
Why Roman concrete refuses to crumble. Ancient Roman structures still stand because of a forgotten mix that modern builders struggle to copy. Sometimes progress means losing knowledge 🏛️ Follow for more lost innovations of history #history #engineering #ancient #rome #architecture | Learnhistory.daily
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Why Roman concrete refuses to crumble. Ancient Roman structure…
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The Secrets of Ancient Roman Concrete | HISTORY
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The Secrets of Ancient Roman Concrete | HISTORY
2021年4月7日
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Was Roman Concrete Better? — Practical Engineering
Was Roman Concrete Better? — Practical Engineering
2019年4月12日
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Roman Concrete Construction | Overview & Examples
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Roman Concrete Construction | Overview & Examples
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We Finally Know Why Ancient Roman Concrete Outlasts Our Own
We Finally Know Why Ancient Roman Concrete Outlasts Our Own
2024年2月27日
howstuffworks.com
The enduring strength of Roman concrete, or 'opus caementicium', wasn't from a lost secret but from superior chemistry for longevity. The key was a mix of lime and pozzolana, a specific volcanic ash found near Pozzuoli, Italy. When mixed with seawater, it triggered a reaction that formed an incredibly stable binder, creating 'lime clasts' that acted as a self-healing mechanism. Unlike modern Portland cement, which cures quickly but can be brittle, the Roman mixture cured slowly and became strong
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