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Laying half fire bricks onto reinforced concrete base - Forno Bravo Forum: The Wood-Fired Oven Community

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Forno Bravo Forum Community,

You will notice a new forum at the top of the main page called, "Ask Me Anything". This forum will be used for live one hour "Ask Me Anything" (AMA) sessions hosted by people who are knowledgeable in different areas pertaining to wood fired ovens. How it works:
- Each AMA will have a "sticky" thread where the community can post questions they would like answered during the live session. This will allow everyone to participate even if you can't be online for the live session. These questions will not be answered by the host until the live AMA; if you need an answer quickly, you should post it in the appropriate Forum area for the community to respond.
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To kick off our AMA feature, we have invited author, chef and master bread maker and host of Pizza Quest, Peter Reinhart, to be our first host! Peter will be in the Forum on Monday, February 15th, from 7:00 - 8:00 pm EST. If you are unable to be online during the live session, you can post your questions in the sticky post. Peter will answer those questions during the live session on February 15th. You can view Peter's answers to your questions as well as what happened during the live session in the session thread.

We hope you enjoy this new feature! Please let us know if there is a topic that you'd like to have as an AMA and we'll look for a host!

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Laying half fire bricks onto reinforced concrete base

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  • Laying half fire bricks onto reinforced concrete base

    I am building my own external wood oven.

    I have built the base and have a 5 inch reinforced concrete base. I have purchased some half fire bricks for the base/hearth (230 x 114 x 32mm). So with the refractory cement layer there will be a heatproof thickness of about 40mm between the burning wood and the concrete base.

    Question I have is, is this enough to protect the ordinary concrete base from fracturing/cracking with the heat?

    All opinions & advise greatly welcomed

    Geof

    PS. Hello everyone

  • #2
    Re: Laying half fire bricks onto reinforced concrete base

    If I understand this correctly, you have no insulation layer on the top of your concrete base?

    I dont think you should worry about protecting the ordinary concrete. The main issue is that you will lose so much heat with no insulation.
    my own Quest for Fire:
    http://www.flickr.com/photos/leckig/

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    • #3
      Re: Laying half fire bricks onto reinforced concrete base

      If you take portland cement based concrete up through about 550 F, it will deteriorate.

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