Opus caementicium exposed inside of a characteristic Roman arch. In distinction to modern-day concrete structures, the concrete Employed in Roman properties was typically included with brick or stone. The Romans utilised concrete thoroughly from 300 BC to Advertisement 476.[18] Over the Roman Empire, Roman concrete (or opus caementicium) was produced https://raymondi7qqq.theobloggers.com/42132544/detailed-notes-on-concrete-reinforced-retaining-wall