Opus caementicium uncovered within a attribute Roman arch. In contrast to modern concrete constructions, the concrete used in Roman properties was commonly coated with brick or stone. The Romans used concrete thoroughly from three hundred BC to AD 476.[18] Throughout the Roman Empire, Roman concrete (or opus caementicium) was made https://conkeysbakeryekkamai51615.blogdosaga.com/35686048/the-definitive-guide-to-concrete-reinforced-with-bamboo