Opus caementicium uncovered inside a attribute Roman arch. In distinction to modern-day concrete structures, the concrete Utilized in Roman properties was normally covered with brick or stone. The Romans utilised concrete thoroughly from three hundred BC to AD 476.[18] During the Roman Empire, Roman concrete (or opus caementicium) was constructed https://aikido-history46924.jiliblog.com/92357642/an-unbiased-view-of-reinforced-concrete-meaning