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造型用水泥砂从经济的观点和卫生工作条件上来看都是有益的。主要的缺点在于凝固硬化慢。水泥砂最大的缺点是塑性低和溃散性差。加入糖浆可以加速水泥的硬化。糖浆与氯化钙的混合物主要作为高灵敏的一种催速剂加入普通水泥(波特兰水泥)。这样的混合物的预制时间在10或30分钟之间,而模型可以在30至40分钟后取出。糖浆的粘性给加工好了的混合物带来了塑性,这样就必然产生模型与型砂之间的分离。另一方面,这种造型材料在硬化这个较长的时间内保持有弹性,因此模型
Molding cement sand is beneficial from an economic point of view and hygienic working conditions. The main disadvantage is that solidification and hardening slow. The biggest disadvantage of cement sand is low plasticity and collapsibility. Add syrup can accelerate the hardening of cement. A mixture of syrup and calcium chloride is added to common cement (Portland cement) primarily as a highly sensitive accelerator. The preforming time for such a mixture is between 10 or 30 minutes and the model can be removed after 30 to 40 minutes. The stickiness of the syrup brings about plasticity to the finished mixture, which inevitably causes separation between the model and the sand. On the other hand, this modeling material remains elastic for a longer period of time, so the model