Old 05-17-2010, 03:56 PM
Join Date: Jan 2010
Location: Cheshire UK
Posts: 36
Default Padding out the soldier course?


I'm using unusual shaped fire-bricks to build the dome. They are quite thin, only 2" thick, 9" x 8". I've cut them in half to make the soldier course .

They will be cut into quarters to build the rest of the dome. Giving me plenty of thermal mass.

Back to the soldier course. I want to add more depth to the 2". I was thinking of padding it out with normal/standard concrete. I will build a round former/shuttering (as we call it in the UK) around the bricks then pour in the concrete.

I know it's not ideal and a little un-orthodox, but I don't have enough bricks to double up for more thickness.

My only concern is how the concrete will hold up to the heat? The fire-bricks are facing the fire and I have seen concrete used to add thermal mass on bread ovens. I've also seen it used to strengthen the soldier course on a large commercial pizza oven. I have my fingers crossed I have a solution

Any advice/feedback will be appreciated

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Old 05-17-2010, 04:10 PM
Master Builder
Join Date: Jul 2009
Location: Los Angeles
Posts: 942
Default Re: Padding out the soldier course?

Why use a soldier course? I would cut them in quarters and stack the first 3 or so courses straight up.

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Old 05-18-2010, 07:35 AM
Join Date: Jan 2010
Location: Houston
Posts: 192
Default Re: Padding out the soldier course?

I agree or at the very least why not cut them in half either on the 8" or the 9" then you would have at least 4 or 4 1/2" thickness? Or am I looking at this wrong?
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Old 05-18-2010, 10:49 AM
Join Date: Jan 2010
Location: Cheshire UK
Posts: 36
Default Re: Padding out the soldier course?

Thanks for the replies. I've revisited/re-calculated and have plenty of bricks to do the soldier course narrow side in. It means loads of cutting, but I'm in no rush
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