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vermiculite mix? - Forno Bravo Forum: The Wood-Fired Oven Community



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.
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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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vermiculite mix?

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  • vermiculite mix?

    I added sand to my portland cement and then added my vermiculite, I'm not sure if this was the correct way to mix? It's been 3 days and it has not dried yet and is very soft and brittle. Should I rip it out and just add the portland to the vermiculite?

  • #2
    Re: vermiculite mix?

    Sand isn't a good idea because it will reduce the insulating properties of the vermiculite, but it shouldn't make a difference in hardening. To the portland, the sand is just another aggregate. I'd wait a week before making any decisions. What proportions did you use?

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    • #3
      Re: vermiculite mix?

      I used 20 parts sand to 1 part cement for my mortar mix then i mixed the 5 vermiculite to 1 portland. Idon't really want to rip it out, but i will if i have to. Do you think i will loose much heat?
      Thanks for your help


      • #4
        Re: vermiculite mix?

        If I am reading this correctly, your end result has very little portland cement.
        Basically you have done a 25-1 ratio (aggregate to cement). At this ratio I would be concerned about strength as well as the diminished insulation value.

        Sorry, I have to ask, WHY did you add the sand? where did you get the idea to make a 20-1 mortar as the starting point for your vemiculite concrete? Just curious....I'm pretty certain it was not from anyone on this forum.



        • #5
          Re: vermiculite mix?

          Way too much sand. The correct amount = none. The vermiculite substitutes for the aggregates in concrete, not adds to them. I'm not surprised it isn't hardening.

          Sand (or gravel or broken glass) isn't an insulator. You don't want it in your insulation layer.
          My geodesic oven project: part 1, part 2


          • #6
            Re: vermiculite mix?

            I don't think it's going to set.
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