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Refractory cement in vermiculite concrete

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  • Refractory cement in vermiculite concrete

    Where in South Australia can I purchase refractory cement or "fondu" as I bellieve it is/was called? I want to create a vermiculite/concrete slab for the base and cover my dome with vermiculite concrete. If I can't buy refractory cement can I use Portland cement with vermiculite (perlite) and if so, will it be prone to cracking?

  • #2
    Re: Purchase query

    Welcome, Brian.

    There is no need to use refractory cement for the vermiculite concrete. Portland will do just fine for this insulating layer. It doesn't get that hot. Where you need refractories is for the mortar between your firebricks, that are directly exposed to the heat of the oven. There are several different ways of doing that: keep reading.
    My geodesic oven project: part 1, part 2

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    • #3
      Re: Purchase query

      Originally posted by dmun View Post
      There are several different ways of doing that: keep reading.
      Good Answer!

      And I have to agree.
      My thread:
      http://www.fornobravo.com/forum/f8/d...ress-2476.html
      My costs:
      http://spreadsheets.google.com/pub?k...Xr0fvgxuh4s7Hw
      My pics:
      http://picasaweb.google.com/dawatsonator

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      • #4
        Re: Refractory cement in vermiculite concrete

        Hi all,

        I moved this to Getting Started. Good answers.
        James
        Pizza Ovens
        Outdoor Fireplaces

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