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Old 01-01-2009, 06:40 PM
Journeyman
 
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Default Pouring the hearth

When you are pouring the two layers in the hearth, can they be poured several days apart or do they need to be done wet on wet??

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Chris
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Old 12-14-2010, 07:29 PM
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Default Re: Pouring the hearth

As the insulating concrete only has compressive strength, it doesn't matter when you apply it. Do it as your schedule permits.
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Old 12-23-2010, 07:40 PM
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Default Re: Pouring the hearth

LOL

I poured separately. I was more concerned about shearing due to heat than anything else. It all worked out well as I had to do the vermicucrete in 2 pours.
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Old 12-23-2010, 09:01 PM
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Default Re: Pouring the hearth

Exactly as Dmun says. They can be separate pours. In addition, the insulated vermicrete layer does not have the same footprint as the structural slab (typically much smaller) , necessitating a certain amount of form work after the structural slab pour sets a bit, usually at least the next day.

Last edited by Neil2; 12-23-2010 at 09:15 PM.
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