Opus caementicium exposed in the attribute Roman arch. In distinction to contemporary concrete buildings, the concrete Utilized in Roman properties was normally included with brick or stone. The Romans used concrete extensively from 300 BC to Advertisement 476.[eighteen] Throughout the Roman Empire, Roman concrete (or opus caementicium) was produced from https://letusbookmark.com/story21596301/indicators-on-reinforced-concrete-meaning-you-should-know