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Hearth Concrete - Forno Bravo Forum: The Wood-Fired Oven Community

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I'm Peter Reinhart! Ask Me Anything! Monday, February 15, 2016 7:00-8:00 pm EST

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.

Ask Me Anything New Forum Feature

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.
- Another thread will be posted for the live AMA. Registered users who are logged in during the live session can interact with the host by asking questions and receiving responses.
- The live thread will remain in the AMA forum to view after the session.

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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Hearth Concrete

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  • Hearth Concrete

    Hi all!
    I'm not sure what happened to my first post on this subject, but I'm hoping that I'll have better luck this time.

    I am about to mix and pour the concrete hearth slab for my Pompei style oven. I am planning to use Sakrete High Strength Concrete for the hearth slab. I believe it is a gravel-sand-portland cement mix, in a 3-2-1 ratio.

    Is this the same sort of mix that everyone is using, or should I be looking for a sandier mix? If so, what are your suggestions?

    Thanks

  • #2
    Re: Hearth Concrete

    I used sakrete gravel mix on mine, worked great..

    Art

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    • #3
      Re: Hearth Concrete

      Originally posted by ftaylor74 View Post
      Hi all!
      I'm not sure what happened to my first post on this subject, but I'm hoping that I'll have better luck this time.

      I am about to mix and pour the concrete hearth slab for my Pompei style oven. I am planning to use Sakrete High Strength Concrete for the hearth slab. I believe it is a gravel-sand-portland cement mix, in a 3-2-1 ratio.

      Is this the same sort of mix that everyone is using, or should I be looking for a sandier mix? If so, what are your suggestions?

      Thanks
      That should work fine. If you are interested in helping the concrete to gain even more strength, use as little water as you can (use enough to make it workable, though) and give it a nice, slow cure. Excessive water in the mix weakens concrete and lessens the PSI of it. You can start out with 5000 PSI mix and end up w/2500 simply by adding too much water. The longer you can keep the moisture in the concrete, the stronger it will be. I cover mine w/plastic to retain the moisture for a few days and cardboard to block the light/sun and to help retain the heat that freshly mixed concrete produces naturally. Of course, a good base, proper thickness and adequate reinforcement are also important. Having said all that, your oven slab isn't going to crumble and fall apart if you don't do these things. It'll just be stronger....that's it. Just my 2.
      My Build:
      http://www.fornobravo.com/forum/f8/s...ina-20363.html

      "Believe that you can and you're halfway there".

      Comment


      • #4
        Re: Hearth Concrete

        Adding some super plasticiser to your brew will also reduce the amount of water used and retain good viscosity, but you need to calculate the correct amount, don't just throw it in by guesswork or you can end up with separation and wreck the mix.
        Kindled with zeal and fired with passion.

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