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Wikipedia is your friend, but the easiest place to get calcium carbonate is from shells. Most parts of the world have earthenware clay from which vessels can be
by zafka 12y ago
Wikipedia is your friend, but the easiest place to get calcium carbonate is from shells. Most parts of the world have earthenware clay from which vessels can be made.
- scintill76 12y agoI know I could look it up, that's why I said they were rhetorical questions. The information is appreciated nonetheless. I'm not saying I'm helpless to learn these things, just reinforcing GP's point that the average first-worlder (or at least programmer) doesn't know the first thing about this kind of stuff. Even when you do know the "first things" from Wikipedia, it's not necessarily going to enable you to just go out and make concrete from scratch in an afternoon on your first try.
- DanBC 12y agoSome walls in Australia still contain traces of seashells. Early settlers used the piles of shells left by Aborigines to make mortar. http://blogs.hht.net.au/cook/oyster-shells/ http://blogs.hht.net.au/cook/oyster-shells/ http://mileslewis.net/australian-building/pdf/07-cement-concrete/7.01-lime-and-cement.pdf http://mileslewis.net/australian-building/pdf/07-cement-conc...