The influence of the pretreatment mode (moisture absorption and desorption process) on material moisture content and water vapor permeability was considered on the basis of the ISO and ASTM standards. And the main method for determining the water vapor permeability coefficient of porous building materials was given. The autoclaved aerated concrete was tested,and the fitting formula of water vapor permeability coefficient with relative humidity was obtained. The seven major factors of the capillary absorption test were evaluated by the Plackett-Burman experimental design. The result shows that ...
