Opus caementicium uncovered in the attribute Roman arch. In contrast to modern-day concrete buildings, the concrete Employed in Roman buildings was commonly coated with brick or stone. The Romans applied concrete thoroughly from three hundred BC to AD 476.[eighteen] Through the Roman Empire, Roman concrete (or opus caementicium) was produced https://bookmarkspiral.com/story19790019/the-best-side-of-concrete-reinforced-stone