#11  
Old 04-28-2008, 01:18 PM
sarah h's Avatar
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Default Re: It seems that I've started

Those are cool blocks - not something I've seen around here.
I guess I misunderstood your question and it sounds like claydite is a reasonable replacement for vermiculite.
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  #12  
Old 04-28-2008, 01:40 PM
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Default Re: It seems that I've started

This is great. As you know, the industrial structure of Russia, and I suppose the other former Soviet republics, formed in considerable isolation from other western countries. You may have neat stuff we've never heard of.
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  #13  
Old 04-28-2008, 09:49 PM
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Default Re: It seems that I've started

They are quite light - I can carry two of them in one hand.
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  #14  
Old 04-28-2008, 09:50 PM
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Default Re: It seems that I've started

"formed in considerable isolation"

That makes the main problem, as I wrote before - need to check everything several times.
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  #15  
Old 04-28-2008, 10:41 PM
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Default Re: It seems that I've started

That Claydite looks a lot like the arlite that I used for insulation in Spain. It's an expanded clay ball that is very light and floats. Comes in huge bags and hardly weighs anything.

http://www.fornobravo.com/forum/f6/i...rial-1343.html (Insulation material)

There has got to be some in the states somewhere??

It's a masonry insulation material used under floors, ceilings and walls.

nice to see another international oven....
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  #16  
Old 04-28-2008, 10:43 PM
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Default Re: It seems that I've started

Another thought....I used mine hollow, not mixed in a cement matrix. It would probably be a great material to add to a perlite cement....perlite concrete then?
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  #17  
Old 04-29-2008, 01:24 AM
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Default Re: It seems that I've started

Yes, Jim, it seems that I'll mix perlite, claydite and cement (can't use only claydite since the size of the granules - need something quite tiny to fill the gaps between bulbs of claydite).
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  #18  
Old 05-04-2008, 01:12 AM
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Default Re: It seems that I've started

Results of this long - 4 days! - weekend: arc and heart poured. Corner installation took a lot of time for making arch framing and so on.
Arch has two angle iron in it and piece of grid, hearth reinforced with rebar and grid.
Base of isulation heart is mixed of claydite, perlite and cement (2:3:1), the very top of the hearth (about 1.5 cm) is of perlite and cement only (5:1). Thinking now of pouring on top of it couple of mm of pure concrete to make the surface even and nice and more durable to work on it (but feel strong and stable antipathy for all concrete works now). Not sure.
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It seems that I've started-arch_frame2.jpg   It seems that I've started-arch.jpg   It seems that I've started-rebar.jpg   It seems that I've started-heart.jpg   It seems that I've started-insulation3.jpg  

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  #19  
Old 05-04-2008, 01:14 AM
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Default The "Mauritius sugar"

It is mortar (fireclay and ground chamotte). Hope that 100 kg will be enough. $21 per each bag.
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  #20  
Old 05-04-2008, 07:08 AM
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Default Re: It seems that I've started

"Grog (also called firesand or chamotte) is a ceramic raw material. It has high percentage of silica and alumina."

Grog (clay) - Wikipedia, the free encyclopedia

Sounds good. Sounds like your mortar will be like Frances'.
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