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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. Roman architectural revolution - Wikipedia

    en.wikipedia.org/wiki/Roman_Architectural_Revolution

    The Roman Pantheon had the largest dome in the world for more than a millennium and is the largest unreinforced solid concrete dome to this day [1]. The Roman architectural revolution, also known as the concrete revolution, [2] is the name sometimes given to the widespread use in Roman architecture of the previously little-used architectural forms of the arch, vault, and dome.

  4. Roman cement - Wikipedia

    en.wikipedia.org/wiki/Roman_cement

    [2] [5] In 1791, Parker was granted a patent "Method of Burning bricks, Tiles, Chalk". His second patent in 1796 "A certain Cement or Terras to be used in Aquatic and other Buildings and Stucco Work", [1] covers Roman cement, the term he used in a 1798 pamphlet advertising his cement. He set up his manufacturing plant on Northfleetcreek, Kent. [2]

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

    www.aol.com/news/2-000-years-later-ancient...

    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. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. List of Greek inventions and discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_Greek_inventions...

    Communism: according to Richard Pipes, the idea of a classless, egalitarian society first emerged in Ancient Greece; since the 20th century, Ancient Rome has also been discussed, among them thinkers such as Aristotle, Cicero, Demosthenes, Plato, and Tacitus, with Plato in particular being discussed as a possible communist or socialist theorist ...

  8. History of construction - Wikipedia

    en.wikipedia.org/wiki/History_of_construction

    Construction is an ancient human activity that began at around 4000 BC as a response to the human need for shelter. [1] It has evolved and undergone different trends over time, marked by a few key principles: durability of the materials used, increase in building height and span, the degree of control exercised over the interior environment ...

  9. NYT ‘Connections’ Hints and Answers Today, Thursday, December 12

    www.aol.com/nyt-connections-hints-answers-today...

    Hints About Today's NYT Connections Categories on Thursday, December 12. 1. All of these words sound like a specific letter in the alphabet. 2. These items are known for their notched edges. 3 ...