So it seems the Romans did not invent cement after all...

It seems that the Romans have been wrongfully credited for inventing cement, according to archaeologists in charge of digging at Vergina, Northern Greece. A collection of some of the finest ancient treasures of Greece displayed at the Oxford’s Ashmolean Museum suggests that the Macedonians used cement 300 years before the Romans. Who would have thought that Alexander the Great's people were innovative builders on top of being excellent fighters?

http://www.bbc.co.uk/news/world-europe-13046299