Over deze norm
This standard describes a test method for determination of the air-void structure in a hardened concrete sample which contains air-entraining admixtures. The air-void structure is decribed by means of the following parameters, which are further detailed in clause 3. 1) Total air content; 2) Specific surface of entrained air; 3) Spacing factor; 4) Air-void size distribution; 5) Micro air content. The method as described is only suitable for use on hardened concrete specimens where the original mix proportions of the concrete are accurately known and the specimen is representative of these mix proportions. This will generally only be the case where the concrete concerned is produced in a laboratory. Appendix B to this method describes the further considerations to allow the principles of this method to be used for the examination of concretes where the original mix proportions are not accurately known or the specimen is unrepresentative.
|Nederlandse titel||Hulpstoffen voor beton, mortel en injectiemortel - Beproevingsmethoden - Deel 11: Bepaling van de eigenschappen van luchtbellen in uitgehard beton|
|Engelse titel||Admixtures for concrete, mortar and grout - Test methods - Part 11: Determination of air void characteristics in hardened concrete|
|Vervangen door||Normatieve verwijzingen||