Opus caementicium uncovered in the characteristic Roman arch. In distinction to contemporary concrete constructions, the concrete used in Roman buildings was typically protected with brick or stone. The Romans utilized concrete extensively from three hundred BC to Advert 476.[18] During the Roman Empire, Roman concrete (or opus caementicium) was comprised https://condonearme69135.madmouseblog.com/16324396/5-easy-facts-about-concrete-reinforced-house-described