This is a powdery substance that non-professionals incorrectly call concrete. The mistake that is made is quite massive, in fact, the concrete itself is composed of cement, sand, gravel (or some other admixture), and water, after hardening of this mixture, which is pre-mixed until homogenized, the so-called concrete is obtained. It is used for masonry, pouring molds into the formwork, and more. бетонови тротоарни плочки
The cement substance itself is obtained by very fine grinding of a substance called cement clinker and gypsum. The grinding itself is done in special ball mills. All concrete mixtures and concrete pavements for the yard are created from cement and inert materials.
Cement was discovered by Joseph Aspdin and belongs to the group of so-called hydraulic binders, which means that when you mix them with water they form a mixture that resembles a paste. This paste has the property of being Cement Milk (cement and water) plastic and hardening.
As it hardens, it changes its strength properties and acquires greater strength. Cement is usually made of limestone and clay, but quite often various additives such as marls and shale are added.