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Oven Floor - Fire Bricks vs Refractory cement

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  • Oven Floor - Fire Bricks vs Refractory cement

    Hi, My name is Mario and I live in South Africa
    I am currently building myself a WFO and would like to ask the following question.
    Can I use refractory cement for the oven floor rather than fire bricks.
    I got the composition of the refractory cement vs the fire bricks and the difference is Na2o/K20 chemicals.
    After reading up I found that the mentioned chemicals is a stability chemical to ensure that the bricks don't warp.
    So my question is, can I use refractory cement for the floor and what are the pros and cons? Floor thickness approximately 40mm.

    My oven inside diameter is 750mm with a wall thickness of about 50mm.
    I have the ceramic blanket and floor board which I will place below the refractory floor..
    Kind Regards
    Mario
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