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  2. Roman concrete - Wikipedia

    en.wikipedia.org/wiki/Roman_concrete

    The Pantheon in Rome is an example of Roman concrete construction. Caesarea harbour: an example of underwater Roman concrete technology on a large scale. Roman concrete, also called opus caementicium, was used in construction in ancient Rome. Like its modern equivalent, Roman concrete was based on a hydraulic-setting cement added to an aggregate.

  3. Scientists Finally Solved the Mystery of Roman Concrete’s ...

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    Calcium is a binding agent in Roman concrete, which makes it remarkably strong. Figuring out where it came from was the key to solving this architectural mystery.

  4. Scientists Finally Solved the Mystery of Roman Concrete’s ...

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  5. 2,000 years later, ancient Roman concrete still stands — and ...

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    Modern concrete crumbles in decades, but the concrete Colosseum still stands — a mystery that puzzled scientists. 2,000 years later, ancient Roman concrete still stands — and experts finally ...

  6. Opus signinum - Wikipedia

    en.wikipedia.org/wiki/Opus_signinum

    It is a form of Roman concrete (opus caementicium), the main difference being the addition of small pieces of broken pot, including amphorae, tiles or brick, instead of other aggregates. [1] Its main advantage over opus caementicium was that it is waterproof, the reason for its widespread use in Roman baths , aqueducts, cisterns and any ...

  7. Roman cement - Wikipedia

    en.wikipedia.org/wiki/Roman_cement

    Roman cement is a substance developed by James Parker in the 1780s, being patented in 1796. [ 1 ] [ 2 ] The name is misleading, as it is nothing like any material used by the Romans , but was a "natural cement " made by burning septaria – nodules that are found in certain clay deposits, and that contain both clay minerals and calcium carbonate .

  8. How are ancient Roman and Mayan buildings still standing ...

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    Today’s builders can’t just copy the ancient recipes. Even though Roman concrete lasted a long time, it couldn't hold up heavy loads: “You couldn’t build a modern skyscraper with Roman ...

  9. Types of concrete - Wikipedia

    en.wikipedia.org/wiki/Types_of_concrete

    Roman concrete was superior to other concrete recipes (for example, those consisting of only sand and lime) [1] used by other cultures. Besides volcanic ash for making regular Roman concrete, brick dust can also be used. Besides regular Roman concrete, the Romans also invented hydraulic concrete, which they made from volcanic ash and clay.