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.
Methods of test for masonry units - Part 11: Determination of water absorption of aggregate concrete, autoclaved aerated concrete, manufactured stone and natural stone masonry units due to capillary action and the initial rate of water absorption of clay masonry units; German version EN 772-11:2011— 10 стр.
Clay masonry units - Part 5: Lightweight horizontally perforated clay masonry units and lightweight horizontally perforated day masonry panels— 16 стр.
