| 摘要 |
A process For the preparation of a plaster mortar containing gypsum powder, water, conventional additives and ballast material, comprising adding said materials, parts or mixtures thereof during the process of manufacture, in the preparation of the gypsum powder, in the mixing of the powder and water or to the mixing water or to the wet mortar, alkoxy silanes and optionally a solvent and optionally a tenside/emulsifier/surfactant and optionally a (silanol) polymerization/condensation catalyst and optionally substances providing for acid or basic reaction conditions in the mixing water and optionally a fine powder consisting of or containing as a dominating constituent reactive silica. |
