Opus caementicium uncovered in a attribute Roman arch. In distinction to modern day concrete buildings, the concrete used in Roman buildings was commonly coated with brick or stone. The Romans utilised concrete extensively from 300 BC to Advertisement 476.[eighteen] In the Roman Empire, Roman concrete (or opus caementicium) was created https://andyjmmlj.jts-blog.com/34678562/the-concrete-reinforced-steel-diaries