vendredi 7 juillet 2017

Why 2,000-year-old Roman concrete is stronger than our own

The exact formula for Roman concrete has been lost. But many of their 2,000-year-old concrete piers and breakwaters structures are even stronger today than they were when they were built millennia ago, while our modern marine concrete structures break down in decades. An international team of researchers recently discovered seawater has a role to play. Concrete in ancient Rome was comprised of volcanic ash, lime, and seawater, mixed with chunks of volcanic rock. A team led by University...

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