#1  
Old 11-05-2011, 12:43 PM
Peasant
 
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Question fire clay walls

Is it ok to use just fire clay for the dome of an oven. I bought premixed bags from my builder providers and im ready to fill the form.
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  #2  
Old 11-07-2011, 08:18 PM
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Default Re: fire clay walls

Probably too late but fire clay on its own wont do the job.
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Old 11-08-2011, 04:18 AM
Peasant
 
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Default Re: fire clay walls

yes too late....... it hasnt set yet though, so what do i add?
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Old 11-08-2011, 01:14 PM
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Default Re: fire clay walls

50% sand and straw for reinforcing
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Old 11-08-2011, 05:13 PM
Peasant
 
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Default Re: fire clay walls

the guy in the builder providers said it was premixed and all i had to do was add water. its taking its time setting. but it has definitly got sand in it and it looks the part. ill let it dry, if its no good, ill strike the form and use the fire clay/ clay cement for insulating the floor under the fire bricks.
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Old 11-08-2011, 05:29 PM
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Default Re: fire clay walls

Quote:
Originally Posted by cobpaul View Post
the fire clay/ clay cement for insulating the floor under the fire bricks.
Clay and cement isnt an insulator, it will add more thermal mass.
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Old 11-08-2011, 10:20 PM
Peasant
 
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Default Re: fire clay walls

ok so for the insulation under the bricks i should use FB, but what is fiberboard? is it like kingspan? or rockwool?
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Old 11-08-2011, 10:33 PM
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Default Re: fire clay walls

I think its calcium silicate board, you could also use the peasants version which is vermicrete, vermiculite and cement.
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Old 11-08-2011, 10:36 PM
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Default Re: fire clay walls

Quote:
Originally Posted by cobpaul View Post
ill let it dry,
You sound like you needed refractory concrete if you are forming a dome that way, refractory concrete sets much like ordinary concrete does, not dries.
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