NF B40-325

Shaped insulating refractory products. Determination of the permanent change in dimensions on heating.

Cette détermination permet de porter un jugement sur la qualité en service des différentes catégories de réfractaires qui sont portées dans les installations industrielles à de hautes températures. Cette caractéristique sert de base à la classification de ces produits et aux choix en fonction de l'installation ; elle sert également au contrôle de la qualité des produits réfractaires denses.

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