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ČSN is a protected designation of Czech national technical standards.
Methods of test for masonry units - Part 20: Determination of flatness of faces of aggregate concrete, manufactured stone and natural stone masonry units
Standard published on 1.2.2001
Selected format:Zkušební metody pro zdicí prvky - Část 20: Stanovení rovinnosti lícových ploch zdicích prvků.
Change published on 1.8.2005
Selected format:Methods of test for masonry units - Part 21: Determination of water absorption of clay and calcium silicate masonry units by cold water absorption
Standard published on 1.10.2011
Selected format:Methods of test for masonry units - Part 22: Determination of freeze/thaw resistance of clay masonry units
Standard published on 1.7.2021
Selected format:Methods of test for masonry units - Part 1: Determination of compressive strength
WITHDRAWN published on 1.10.2011
Selected format:Methods of test for masonry units - Part 1: Determination of compressive strength
WITHDRAWN published on 1.5.2001
Selected format:Methods of test for masonry units - Part 5: Determination of the active soluble salts content of clay masonry units
WITHDRAWN published on 1.12.2003
Selected format:Zkušební metody pro zdicí prvky - Část 5: Stanovení obsahu aktivních rozpustných solí v pálených zdicích prvcích (Norma k přímému použití jako ČSN).
WITHDRAWN published on 1.7.2002
Selected format:Methods of test for masonry units - Part 5: Determination of the active soluble salts content of clay masonry units
WITHDRAWN published on 1.9.2016
Selected format:Methods of test for masonry units - Part 11: Determination of water absorption of aggregate concrete, manufactured stone and natural stone masonry units due to capillary action and the initial rate of water absorption of clay masonry units
WITHDRAWN published on 1.2.2001
Selected format:Latest update: 2026-08-13 (Number of items: 2 293 179)
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