scope:

Specifies a procedure for determining the hygric expansion or contraction behaviour of building materials as a function of moisture content. It is applicable for mineral, porous hygroscopic materials. For other materials showing moisture-induced deformations, the procedure described can be applied in a suitable way taking into account their specific moisture behaviour. This standard is relevant to material states when reversible expansion/contraction processes may be assumed, but not to states governed by irreversible processes such as shrinkage after material production or after initial drying.