Opus caementicium exposed inside of a attribute Roman arch. In contrast to fashionable concrete constructions, the concrete Employed in Roman buildings was ordinarily coated with brick or stone. The Romans employed concrete extensively from 300 BC to Advert 476.[eighteen] Over the Roman Empire, Roman concrete (or opus caementicium) was comprised https://bobo-shabu-and-grill04815.webbuzzfeed.com/36275329/5-easy-facts-about-concrete-reinforced-house-described