在光滑的混凝土基层上抹水泥砂浆,按传统作法难免出现空鼓现象,既影响工程质量,又浪费工料。怎样才能防止抹水泥砂浆出现空鼓呢?北京市第三建筑工程公司三工区一队抹灰组从多年实践中,摸索出了一条简单易行的措施,有效地治好了这一常见病。具体作法是:一、抹灰前,先将混凝土构件或墙体表面的脱模剂,用10%的火碱溶液清刷干净;再过一遍清水。 The application of cement mortar on smooth concrete bases will inevitably lead to empty drums, which will affect the quality of the works and waste materials. How can we prevent the emptying of the cement mortar? The third-level plastering team in the Sangong District of Beijing No. 3 Construction Engineering Company has, from many years of practice, found a simple and easy measure to effectively cure this common disease. The specific approach is: First, before plastering, first remove the mold release agent from the surface of the concrete structure or wall, and clean it with a 10% fire alkali solution;