small limestone gravel for cob oven?

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fliver
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Posts: 1

small limestone gravel for cob oven? Aug 20, 2012 10:53:14 GMT -8

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Post by fliver on Aug 20, 2012 10:53:14 GMT -8

My kids and I are building a cob pizza oven. I am thinking about using limestone fines for the sand in the cob. It is easy to get here, and cheap/free. Would it have a tendency to flake or break off under high heat conditions?

phildodd
New Member

Posts: 4

small limestone gravel for cob oven? Aug 27, 2012 2:38:22 GMT -8

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Post by phildodd on Aug 27, 2012 2:38:22 GMT -8

There are industrial processes linked with the process of limestone being heated. If you view the Wikipedia page entitled :

Carboniferous limestone

and go down to near the end of the page, to the Economics section, it might help you to make an informative guess as to whether limestone might or might not cause you problems.

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