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mixture of vermiculite - Forno Bravo Forum: The Wood-Fired Oven Community



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mixture of vermiculite

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  • mixture of vermiculite

    so is this right 6 shoval fulls of vermiculite to 1 shoval full of portland cement then mix with water.and troll out.

  • #2
    Re: mixture of vermiculite

    I'm not sure what troll out means, but the proportions are correct.



    • #3
      Re: mixture of vermiculite

      You're going to find that vermiculite concrete is weird stuff, it's nothing like smoothing and floating concrete with conventional aggregates. You're going to use your trowel to pat it into place, the goal is to slightly compact the top surface, rather than draw a slurry of wet cement to the surface.
      My geodesic oven project: part 1, part 2


      • #4
        Re: mixture of vermiculite

        All in all though, your description sounds about right. I used a 5 to 1 ratio. Your's may work a bit better for its intended purpose.
        Everyone makes mistakes. The trick is to make mistakes when nobody is looking.