Opus caementicium uncovered in a attribute Roman arch. In contrast to present day concrete constructions, the concrete Utilized in Roman properties was commonly lined with brick or stone. The Romans made use of concrete extensively from three hundred BC to AD 476.[eighteen] Throughout the Roman Empire, Roman concrete (or opus https://dominickj77r8.collectblogs.com/80532538/helping-the-others-realize-the-advantages-of-concrete-reinforced-with-rebar