Roman concrete is not like modern concrete. The process in modern concrete does not stop and eventually makes it too brittle and falls apart, Roman concrete doe

Roman concrete is not like modern concrete. The process in modern concrete does not stop and eventually makes it too brittle and falls apart, Roman concrete does not do this and can last a very long time. https://science.howstuffworks.com/why-ancient-roman-concrete-stronger-than-modern.htm https://science.howstuffworks.com/why-ancient-roman-concrete...