Search results
Results From The WOW.Com Content Network
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.
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.
In contrast to modern concrete structures, the concrete used in Roman buildings was usually covered with brick or stone. The Romans used concrete extensively from 300 BC to AD 476. [18] During the Roman Empire, Roman concrete (or opus caementicium) was made from quicklime, pozzolana and an aggregate of pumice. [19]
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 .
For premium support please call: 800-290-4726 more ways to reach us
Starting around 200 BCE, the architects of the Roman Empire were building impressive concrete structures that have stood the test of time — from the soaring dome of the Pantheon to the sturdy ...
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 or (more frequently) bricks.
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 ...