This European Standard describes a test method for determination of the air- void structure in a hardened concrete sample which contains entrained air. The air-void structure is described by means of the following parameters, which are defined in clause 3. i) Total air content, ii) Specific surface of air void system, iii) Spacing factor, iv) Air-void size distribution, v) Micro air content.
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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