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We Finally Know Why Ancient Roman Concrete Was So Durable

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Via Cathode Church

The team tested their findings by making pozzolanic concrete from ancient and modern recipes using quicklime. They also made a control concrete without quicklime and performed crack tests. Sure enough, the cracked quicklime concrete was fully healed within two weeks, but the control concrete stayed cracked.

sciencealert.com/we-finally-kn

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