CEMENT TECHNICAL INFORMATION
It is a material used for bonding gravel, bricks, briquettes and others, the main raw materials of which are limestone, clay and mineral parts. The cement must be mixed with water for the reaction.
Limestone, clay, iron ore, sand are crushed into a powder. This material is then baked in rotating ovens at 1400-1500°C. This resulting product is called "clinker".
Portland cement is obtained by grinding into a very fine clinker powder (4-5%), to which a small amount of gypsum is added. Production of alloyed cement (materials vary depending on the type of cement.) materials used for clinker, gypsum, blast furnace slag, ash, silica, etc.
The smallest part of the volume in the concrete mix is occupied by cement. The preferred types of cement according to its characteristics are Portland cement, alloyed cement, slag cement and sulphate cement, except for special purposes when white Portland cement and some other types of cement are used.
Inert fine-grained elements are the most durable in conventional concrete. These elements determine the strength and adhesion of the cement mixture. The strength of the cement mixture depends on the ratio of components. The types of cement used in concrete are standardized in the TS EN 197 series.