Ancient Roman architecture has managed to stand the test of time for 2,000 years because the concrete mortar used for the structures included a secret ingredient, scientists have discovered. Monuments ...

Ancient Roman concrete consists of coarse chunks of volcanic tuff and brick bound together by a volcanic ash-lime mortar that resists microcracking, a key to its longevity and endurance. Disclaimer: ...

In 30 B.C., the Roman architect Vitruvius wrote down an ancient recipe for mortar that, as it happens, could make modern buildings more durable and environmentally friendly. The crucial ingredient, ...