vapour permeability

• Methods of test for masonry units - part 15 : determination of water vapour permeability of autoclaved aerated concrete masonry units ; german version en 772 - 15 : 2000
  圬工品试验方法.第15部分:高压蒸汽加气混凝土圬工品
• Methods of test for mortar for masonry - part 19 : determination of water vapour permeability of hardened rendering and plastering mortars ; german version en 1015 - 19 : 1998 a1 : 2004
  砖石灰浆试验方法.第19部分:硬化初涂灰浆和抹灰灰浆