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目前国内建筑业大多数仍采用传统的工艺及原料,在现场配制砌筑及粉刷用沙浆。这种沙浆由水泥,石灰、河沙按设计的水灰比例计量掺配制成。传统的配制方法所采用的散装原料需分别运输、堆存,物料飞扬散落,计量配料费工,以及施工用地多,环境污染,施工成本增加。此外,国产水泥标号一般都在300号以上,低标号水泥少,因此产生了用高标号水泥配制低标号沙浆的不合理现象。据统计在一般建筑施工中,用于配制沙浆的水泥,约占该建筑水泥总耗用量的25—40%,这是
At present, most of the domestic construction industry still uses traditional techniques and raw materials, and prepares mortar for construction and painting on site. This kind of mortar is made up of cement, lime and river sand according to the proportion of the designed water-cement ratio. The bulk materials used in the traditional preparation methods need to be transported and stored separately, the materials are scattered and scattered, the metering of ingredients is laborious, and there are many construction sites, environmental pollution, and construction costs increase. In addition, the domestic cement number is generally more than 300, less low-grade cement, resulting in the use of high-grade cement preparation of low-grade mortar unreasonable phenomenon. According to statistics, cement used to prepare mortar in general building construction accounts for about 25-40% of the total cement consumption of the building.