This Standard sets out a method for the determination of permanent linear and volume changes of refractories after any or all of the following processes:

(a) Drying.

(b) Firing.

(c) Reheating.

This Standard is applicable to prefired and unfired refractories having either a regular or irregular shape. It is not applicable to carbon-bearing refractories, ceramic fibre products or mortars.

NOTE: Refer to AS 1774.28 for ceramic fibre products and to AS 1774.22 for mortars.