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I'm not an expert on this and I may be mis-remembering something I read somewhere once, but I believe the Roman formula for concrete was quite a bit different.
by elihu 12y ago
I'm not an expert on this and I may be mis-remembering something I read somewhere once, but I believe the Roman formula for concrete was quite a bit different. The reasons we don't use it in modern construction are: it takes a really long time to cure, and it's made with salt water, which might cause rebar to rust.
- shubb 12y agoChina had it's own historical cement recipe, including rice. Recently discovered it may have useful properties that can be reapplied today. http://phys.org/news194411869.html http://phys.org/news194411869.html