For centuries, concrete was everywhere in Roman Italy: in the awesomely durable breakwaters of artificial harbors, in the soaring vaults of great baths, in the foundations of the Colosseum, and - of course - in the spectacular dome of the Pantheon. But during late antiquity, concrete all but vanished from the Mediterranean world, and would not be used widely again until the twentieth century. This video explains why.Chapters:0:00 Introduction0:39 Understanding Roman concrete1:29 Early experiments2:25 The apogee3:33 Squarespace!4:19 Geographic limits of Roman concrete5:00 The decline of concrete6:28 Final notices7:26 Not forgotten, but goneWhy was Roman Concrete Forgotten during the Middle Ages?...
