Methods of test for masonry units - Part 21: Determination of water absorption of clay and calcium silicate masonry units by cold water absorption; German version EN 772-21:2011— 7 стр.
Test method for the determination of the frost resistance of fair faced clay-bricks and clincer-bricks - Part 3: One side freezing of test walls— 10 стр.
Methods of test for masonry units - Part 22: Determination of freeze/thaw resistance of clay masonry units; German and English version prEN 772-22:2017
Test method for the determination of the frost resistance of fair faced clay-bricks and clincer-bricks - Part 3: One side freezing of test walls— 10 стр.
