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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.
Scale models of some Ancient Egyptian house, in the Louvre Minoan house model, c. 1700-1675 BC, terracotta, in the Heraklion Archaeological Museum (Heraklion, Greece) Floor plan of a "foursquare" house. Little is known about the earliest origin of the house and its interior; however, it can be traced back to the simplest form of shelters.
Dating from the 2nd century, it is an unreinforced concrete dome 43.4 meters (142 ft) wide resting on a circular wall, or rotunda, 6 meters (20 ft) thick. This rotunda, made of brick-faced concrete, contains a large number of relieving arches and voids. Seven interior niches and the entrance way divide the wall structurally into eight virtually ...
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 ...
The ancient Egyptians are credited with inventing the ramp, lever, lathe, oven, ship, paper, irrigation system, window, awning, door, glass, a form of plaster of Paris, the bath, lock, shadoof, weaving, a standardized measurement system, geometry, silo, a method of drilling stone, saw, steam power, proportional scale drawings, enameling, veneer ...
The first use of concrete by the Romans was in the town of Cosa sometime after 273 BC. Ancient Roman concrete was a mixture of lime mortar, aggregate, pozzolana, water, and stones, and was stronger than previously used concretes. The ancient builders placed these ingredients in wooden frames where they hardened and bonded to a facing of stones ...
Although different forms of cement already existed (Pozzolanic cement was used by the Romans as early as 100 B.C. and even earlier by the ancient Greek and Chinese civilizations) and were in common usage in Europe from the 1750s, the discovery made by Aspdin used commonly available, cheap materials, making concrete construction an economical ...
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