TEMPERED REFRACTORY CONCRETE BLOCK HAVING CONTROLLED DEFORMATION

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Refractory concrete comprising a refractory aggregate bound by a binder matrix, the matrix representing between 10 and 60% by weight of the concrete and having a composition such that, in percentages by weight based on the matrix : - Al2O3 + SiO2 > 70% - 50 % > SiO2 > 10% alkaline-earth oxides : < 0.2%.