What is a substance like concrete? Its main components are gravel or crushed stone, which fills the resulting voids. Concrete is used in many areas of construction. Accordingly, such a mixture can be used for different needs, which means that the volume of its components fluctuates, in particular cement, which is calculated by the consumption per 1 cubic meter of concrete, which ultimately affects the price of the product.
Concrete has its own classification and different grades. Their symbols are an indicator of its reliability. Accordingly, the more reliable the substance, the more expensive it is. But the use of concrete, its various grades, is primarily due not to the strength of the material, but to the operational features of the facility for the construction of which this mixture is used.
Concrete itself with a volume of 1 cubic meter consists of about 0.5 cubic meters of sand, gravel and crushed stone and cement. The consumption of cement per cube of concrete is determined by its brand. The most popular ones will be discussed further.
"M100" - the mass of cement should be 220 kg per 1 cu. It is used in monolithic concrete structures, curbs, floors, concreted on the ground.
"M200" - cement consumption per cube of concrete - in the amount of 280 kg. Characterized by high tensile strength. Suitable for use in foundations, the basis of various structures, when creating some small roads (for example, for pedestrians).
"M250" - the amount of cement should be 330 kg. This brand is in low demand, although its characteristics are much better than those of the previous ones. Mainly used in the foundations of monolithic buildings, stairs, sidewalks.
380 kg of cement is poured into "M300" concrete. This type is used in important structures, which must be the strongest and most resistant, on which the safety of many people depends. On a fairly large scale, such concrete has recently been used in the Moscow region. Without this material, collector systems, the construction of blind areas, monolithic walls and tracks for cars are not complete. Withstands temperatures up to 180 degrees thanks to additional chemical additives.
Besides, for any foundation, concrete must be made in a ratio of 1:3:5. In other words, 1 bucket of cement, 3 sand, and 5 gravel are added. Water can be added by eye. The proportions should always remain the same, the difference lies only in the type of cement itself. The strength of the foundation regulates the consumption of cement per cube of concrete. First you need to calculate the planned pressure of the structure, and then select the desired type. The minimum allowable grade for the foundation is M300, if the number is lower, then it is prohibited to use such a substance for the construction of the foundation.
The main conclusion is that the reliability of the entire building structure (private house, high-rise building, school, and so on) directly depends on what cement consumption per cube of concrete will be used. In fact, there are a lot of concrete grades, only the most basic ones are presented in this description. The type of cement is selected for a specific structure, in accordance with the prescribed standards.
