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Bert 04-26-2011 09:01 PM

Limestone as an alternative firebrick
 
Hi All

Firebricks are expensive here in Oz. My father in-law has these limestone slabs (approximately 600mmx300mmx75mm). I was wondering if limestone is a suitable alternative? I know that they use lime mortar in colder countries but that where my knowledge ends. I was thinking I could cut it down into appropriate size for the Pompeii oven. Its free which will save me considerable money. Putting the question out there. Can I use limestone as opposed to regular firebricks??

Thanks

Bert

brickie in oz 04-26-2011 11:44 PM

Re: Limestone as an alternative firebrick
 
They burn limestone to make quick lime to make the hydrated lime you buy in a bag, so no you cant use it.

Bert 04-27-2011 03:34 PM

Re: Limestone as an alternative firebrick
 
Bugger! Not the answer I was after Brickie from Oz, but thanks.:(

azpizzanut 04-27-2011 05:20 PM

Re: Limestone as an alternative firebrick
 
Bert,

Limestone blocks would make a great base material. You can do your enclosure and other construction features with it. Maybe even tint the mortar for color contrast, etc.

Cheers,

tusr18a 04-27-2011 05:54 PM

Re: Limestone as an alternative firebrick
 
Here is a video that will show you what would happen to the heated limestone if it was ever exposed to water. Interesting science project and bad wood fired oven material choice.

dmun 04-27-2011 06:54 PM

Re: Limestone as an alternative firebrick
 
Yep, portland concrete is basically artificial limestone. I think you'd find the naturally occurring limestone would spall, crack, and crumble just as badly.

brickie in oz 04-27-2011 09:45 PM

Re: Limestone as an alternative firebrick
 
Quote:

Originally Posted by tusr18a (Post 111935)
Here is a video that will show you what would happen to the heated limestone if it was ever exposed to water. Interesting science project and bad wood fired oven material choice.

What an excellent video..:cool:


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