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Help with insulating concrete layer, please, we're freaking out alittle - Forno Bravo Forum: The Wood-Fired Oven Community

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Photo Galleries are back! Instructions below.

Dear forum users,
Thank you for your patience with the Photo galleries. We've got your galleries online!
We have finished writing a custom script to migrate the PhotoPlog to vBulletin5’s albums.

Unfortunately V-Bulletin killed the "Photoplogs" in their software upgrade which was unforeseen and we're the first development group to have written a script for getting the galleries back... that said, it took some time to reverse engineer the code and get the albums to move over seamlessly!

Forum users will be able to access their “PhotoPlog” images through their user profile page by clicking on the “Media” tab.
They will also be able to browse other albums by going to the albums page. (On the forum site, there is a link in the black bar beside “Forums” to the albums.)

In order for users to create an album please follow the steps below.
1) Go to user profile page and click “Media”
2) Click Add Photos
3) Enter Photo Gallery Title in the first field
4) Click Upload or Select from Photo Album to add photos
5) Click Post
6) Once posted, the album will be created as a “Topic” on the albums page for the public to see. The topic title will be the “Photo Gallery Title” they created before uploading their photos.


To create this migration path we used vBulletin5’s default album structure. Unfortunately, it won’t work like the “PhotoPlog” but is an album/gallery component on the forum now.
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Help with insulating concrete layer, please, we're freaking out alittle

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  • Help with insulating concrete layer, please, we're freaking out alittle

    Hi,

    Yesterday we poured the insulating concrete layer for the 42" Tuscan-style we're building. We used 5:1 Vermiculite:Portland, and the guys actually mixing and tamping the concrete are experienced in all kinds of concrete installation, but had never before worked with this mixture.

    The cat walked on it in 2-6 hours after we poured it and left 1" depressions all over it. Weird.

    The concern is that it will never cure to the point where it will properly support the weight of the oven.

    Your advice on this will be greatly appreciated!
    Cheryl & Gary

  • #2
    Re: Help with insulating concrete layer, please, we're freaking out alittle

    Been there, done that... its wierd stuff to work with and doesn't act anything like regular cement. Sometimes it firms up in a day or two, but mine took about a week...

    So if the cat still leaves dents in it by this time next week, you're allowed to worry. In the meantime just leave it where it is, it'll be fine.

    Oh, and so's you know what to expect, the finished product feels a bit like cork, but it really is strong enough to support an oven.
    "Building a Brick oven is the most fun anyone can have by themselves." (Terry Pratchett... slightly amended)

    http://www.fornobravo.com/forum/f8/p...pics-2610.html
    http://www.fornobravo.com/forum/f9/p...nues-2991.html

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    • #3
      Re: Help with insulating concrete layer, please, we're freaking out alittle

      Thanks! That helps!

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      • #4
        Re: Help with insulating concrete layer, please, we're freaking out alittle

        Let it cure and I expect that you will be OK. I mixed my insulating layer at a 9/10 to 1 ratio and it poured like pudding (just be sure that the poured layer is all pudding not vermiculite floating upon water). Next day it was firm and yet the surface was delicate and pieces could easily be dislodged by rubbing with a finger tip. A day or two after that and it was like cork; yes, it still could be point loaded and compressed but bricks spread the load out over a much larger area. One real advantage of pouring the mix quite wet is the pour is almost completely self leveling, just a quick screed and you're good to go.
        Hope this is some re-assurance, just give it some time to cure. Oh and if you haven't already, I would fill in the cat prints :-)
        Bests,

        Wiley

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        • #5
          Re: Help with insulating concrete layer, please, we're freaking out alittle

          I had cat prints in my support slab. I bet s/he was in for a rude shock at paw licking time.

          To your question, it takes a week, dries to cork like consistency, and has lots of compressive strength, but will easily chip away at the edges.
          My geodesic oven project: part 1, part 2

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          • #6
            Re: Help with insulating concrete layer, please, we're freaking out alittle

            Keep it damp for at least a week . If it drys out at all then it won't set properly and you may have to start over.

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            • #7
              Re: Help with insulating concrete layer, please, we're freaking out alittle

              Thank you all so much for the reassurance and advice!

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