Crumb passes through the

Gypsum cement is made by adding chopped gypsum stone. It should be noted that in the process of grinding, the gypsum crumb passes through the firing stage and thanks to this gypsum in the composition of the cement becomes the same as it was in the source. Gypsum cement has fiery resistance: when exposed to fire, a water crust is formed on it that does not allow the penetration of open fire into deep layers of the solution. Grinding clinker and gypsum with the addition of mineral additives is the process of manufacturing Portland cement. This material has increased strength and strength, inferior only to steel. Portland cement manufacturers guarantee one hundred percent quality of their products, since the material undergoes a serious test in laboratories. For example, the material is immersed in an autoclave, where under the influence of various temperatures, they check how much it changes in size, because it depends on this expansion when setting. Such tests found that the proportion of Portland cement on average is 3.1 g // Water, then you can get a solution of special strength, which will be higher than that of Portland cement. The strength of such a cement in some cases can be compared with the strength of ceramics.