Free Republic

Quake-proof cement mixed '1 300 years ago' November 13 2002 at 04:36PM London - The Sixth Century builders of Hagia Sophia, the Byzantine cathedral still standing in Istanbul, discovered cement with earthquake-resistant properties 1 300 years before anyone else, a research team revealed on Wednesday. Hagia Sophia, built as a church and subsequently turned into a mosque, still stands only because its creators discovered the cement. Many of the surrounding buildings have long since succumbed to the ravages of time, including earthquakes, according to a report in the New Scientist. The structure has withstood quakes of up to 7,5 on...