This European Standard specifies two methods for determining the air content of fresh mortars including those containing mineral binders and both dense and lightweight aggregates: Method A "The pressure method" and Method B "The alcohol method". For air content less than 20 %, method A is applicable. For air content of 20% or more, method B is applicable.
Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
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