Forbidden Universe

Paranormal => General Paranormal => Topic started by: AngelOfThyNight on July 04, 2017, 05:04:03 AM

Title: How has Roman concrete lasted 2,000 years ?
Post by: AngelOfThyNight on July 04, 2017, 05:04:03 AM

How has Roman concrete lasted 2,000 years ?

The remarkable longevity of Roman sea piers has proven something of a mystery to modern engineers. Whatever the Romans put in to their concrete, it ha...
Source: How has Roman concrete lasted 2,000 years ? (http://www.unexplained-mysteries.com/news/309168/how-has-roman-concrete-lasted-2000-years)