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1311 Refractory motar formula - 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!

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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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1311 Refractory motar formula

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  • 1311 Refractory motar formula

    I am using is 1 part Lime, 1 Part Portland, 1 part fireclay and 3 parts sand.

    Is it normal for this not to dry fast. I put up a few courses two days ago and the mortal is still not dry.

    any suggestions.

  • #2
    Re: 1311 Refractory motar formula

    It's the right mix - how wet are you mixing it. I live in an area that has low humidity, by the next day it was pretty much done. I see you live in a humid area so it may take a little while longer to "dry". What exactly is the concern? If you can keep stacking brick - I don't see a problem.

    Les...
    Check out my pictures here:
    http://www.fornobravo.com/forum/f8/les-build-4207.html

    If at first you don't succeed... Skydiving isn't for you.

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    • #3
      Re: 1311 Refractory motar formula

      Sounds like you may have used too much water, cooler fall temperatures will also retard set times alittle. I laid up some regular brick and mortar last Saturday and it was hard on Monday.

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      • #4
        Re: 1311 Refractory motar formula

        i just wanted to make sure that it will cure properly. Also for the arch i am using regular motar cause the 1311 was just not working i had to do the arch 3 times. Is using regular mortar for the arch bad?

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        • #5
          Re: 1311 Refractory motar formula

          If it is the doorway arch as part of the oven dome it is really not a good idea to use a mortar with no fireclay as those bricks will get hot...if it is the outer archway you could do it in regular and by regular I mean type N which is equal parts portland cement and lime to about 6 parts sand...those brick will still get hot so it would still be recommended to use the same fireclay mix...important to keep in mind that the fireclay in the refractory mortar really does not harden until it is fired really hot...
          Best
          Dutch
          "Making the simple complicated is commonplace; making the complicated simple, awesomely simple, that's creativity. " Charles Mingus
          "Build at least two brick ovens...one to make all the mistakes on and the other to be just like you dreamed of!" Dutch

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