During the construction of any building or structure, the leading role of building the structure is determined by the cement. A lot depends on the correct choice of material for mounting or filling.
Types of cement and its application
Hydrophobic Portland cement is a astringent hydraulic dissolution, which is formed from grinding the clinker (port -cement) and a hydrophobizing active additive with a normal dose of gypsum. This type of cement has an advantage over others in the form of ease of use and transportation. Due to its reduced hygroscopicity, it has wonderful properties of storage and transportation in the most unfavorable conditions. Such cements are very used, and consequently increase frost resistance. Potzzolan Portland cement, is obtained from the interaction of the same Portland cement clinker, gypsum and active minerals by thorough mixing of the same minerals separately chopped. In the mass of cement, there are additives of volcanic origin, burned clay, gliege and fuel ash. The disadvantage of this type of cement is a long hardening at the optimum temperature, but it may be used in water, which distinguishes this species from others.
Slag -portland cement. This type of cement is carried out by simultaneously grinding the clinker and dried domestic slag with a plaster addition. The technology for the manufacture of slag -port -cement differs because blasting slag must be dried at temperatures, which excludes its possibility in recrystallization. White Portland cement. It is a product of the clinker (low -stroke) with a moderate amount of gypsum with a diatomite addition. The raw materials materials of such cement are limestones and sand-clay rocks of oxides. The minus is a long manufacture and finding materials.