I'm reading about this because I'm considering it but there is information as well that says it's no good.What is the truth about it?
Due to the pumice used, Ancient Roman concrete was a hydraulic cement and those structures are still standing. Ancient Chinese concrete was also a hydraulic cement due to the sticky rice used and those structures are proving difficult to demolish with modern equipment plus the sticky rice makes them ductile so they flex with Earthquakes. Ancient Chinese ships often used cement to strengthen wood which may be why they are reported to have made wooden ships as large as 400 feet long when the longest relatively modern wooden ship in the west was about 200 feet and required iron bracing. The BP well that leaked in the Gulf was finally sealed with hydraulic cement. Make sure you know how to prepare and cure the cement properly.
