Roman concrete vs. modern concrete: Which one’s stronger?
11:48
Roman concrete vs. modern concrete: Which one’s stronger?
3 weeks ago
MSNDetailed Engineering
Roman Concrete That Grew Stronger #RomanConcrete #AncientEngineering #Pozzolana | TerrifyingMyths
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Roman Concrete That Grew Stronger #RomanConcrete #Ancie…
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We forgot how to make concrete
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We forgot how to make concrete
1 month ago
MSNInteresting Engineering
We Finally Know Why Ancient Roman Concrete Outlasts Our Own
We Finally Know Why Ancient Roman Concrete Outlasts Our Own
Feb 27, 2024
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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The enduring strength of Roman concrete, or 'opus caementicium', …
187.9K views4 months ago
FacebookHistory Vault
Roman concrete is one of those things that looks simple on the surface until you start paying attention. The secret was never lost magic. It was careful engineering and an enormous amount of patience. The Romans began using it around 300 BCE, and they mixed it with a precision that came from long practice. Quicklime, volcanic ash known as pozzolana, and small stones were brought together to make something that did not behave like our concrete today. It strengthened itself over time when water se
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Roman concrete is one of those things that looks simple on the su…
98 views5 months ago
FacebookThe History Vault
Roman engineers discovered something extraordinary nearly 2,000 years ago—a form of concrete that doesn’t weaken with time, but heals itself and grows stronger. Structures built with Roman concrete, especially harbors and seawalls, continue to stand today despite constant exposure to seawater. Modern science has now uncovered why. Important Details: • Roman concrete was made using volcanic ash (pozzolana) instead of modern cement • When seawater enters cracks, it reacts with the ash • This react
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