| 摘要 |
PURPOSE:To prevent pearlite liable to be collapsed from being collapsed in the case of the production of a lightweight inorganic plate material using pearlite and also to prevent the voids in the matrix caused by water oozing from the water-contd. pearlite. CONSTITUTION:The pearlite is used as a lightweight aggregate, and 20-40wt.% water is added to the total solid content weight of the pearlite, cement, silica and other fillers and they are kneaded and the wet kneaded material is supplied on a molding belt in a layer form and then the plate is produced by a press roll. The water absorption quantity of the pearlite is restrained minimum, thereby the oozing of water is prevented. |
