Need the ratios for mixing refractory cement

[Bill Rowell]

I am making my own refractory mortar/cement as described in the Il Forno book using Fire Clay, Portland Cement, Lime, and Sand. I would like to get the ration of materials in the mix.

[hb2474]

1 part portland
3 parts sand
1 part lime
1 part fireclay

[Viresh.S]

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[Lill Dave]

Parts ratio is 3x2x2x0.5, plus water
3 shovels of the gravel or crushed firebricks
2 shovels of sand
2 shovels of the cement
half shovel of lime ( hydrated lime)
This amount will require approximately 6-7 liters of water to mix the concrete.
The website this came from is Refractory concrete mixing recipe | Refractory concrete ingredients for wood ovens.

You can save much $ mixing your own.

[Lburou]

Originally Posted by hb2474

1 part portland
3 parts sand
1 part lime
1 part fireclay

I'm going to use this recipie....Of course, I'll add water

The mixing instructions at the other link are satisfactory however.