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为了顺利地掌握石膏混合物的生产工艺就需要了解它的水化机理。只有在充分了解石膏混合物硬化产物的结构与其力学性质之间的关系时,才有可能控制石膏制品的性质。一、石膏混合物在水化过程中的凝结机理:在平常温度下,半水石膏在水化过程中呈不稳定状态,而且还释放出一定量的水化热(参看图1)。CaSO_4·1/2H_2O+1(1/2)H_O→COSO_4·2H_2O+1.17～19.26千焦耳半水石膏在20℃时的溶解度为0.885克 CaSO_3/100克水,而二水有膏在同样温度下的溶解度为0.204克 CaSO_4/100克
In order to successfully master the production process of the gypsum mixture, it is necessary to understand its hydration mechanism. Only by fully understanding the relationship between the structure of the hardened product of the gypsum mixture and its mechanical properties can it be possible to control the properties of the gypsum product. First, the gypsum mixture in the hydration process of the condensation mechanism: In the normal temperature, hemihydrate gypsum in the hydration process showed an unstable state, but also released a certain amount of heat of hydration (see Figure 1). The solubility of CaSO_4·1/2H_2O+1(1/2)H_O→COSO_4·2H_2O+1.17~19.26 kilojoules of hemihydrate gypsum at 20°C is 0.885g CaSO_3/100g water, and dihydrate has the same temperature at the same temperature. The solubility is 0.204g CaSO_4/100g