Opus caementicium exposed in the attribute Roman arch. In contrast to modern concrete buildings, the concrete Utilized in Roman properties was commonly coated with brick or stone. The Romans used concrete extensively from three hundred BC to AD 476.[18] During the Roman Empire, Roman concrete (or opus caementicium) was made https://bangkokwax60357.tblogz.com/the-concrete-reinforced-steel-diaries-49185709