Cement powder is one of the main components for the implementation of construction of any orientation (residential, industrial) and various scales. Delivery is carried out in bags of 25/40 and 50 kg of cement . However, in order to effectively implement the installation and construction processes, it is necessary to understand how much volume (in cubic meters) is required. m) the powder content in this container.

Buying extra cement in bags is not advisable, even if you use it regularly. During storage of any branded cement mix (even if the conditions are fully met) it loses its strength level and degrades in other characteristics.

When mixing a solution, it is very important to know exactly how many cubic meters of powder per 50 kg bag of material. The relevance of this issue is all the higher because a larger scale of work is expected to be carried out. Having clearly defined the correspondence between the mass and the number of cubes, you can save money by buying building materials in a 50 kg bag (or any other). Next, we will consider the rules for calculating and consuming cement, which everyone should follow.

Attention! Proportions for further calculations are indicated based on the volume of a 50 kg bag of cement.

## Determination of the number of cubes in a bag of cement

It is necessary to take into account the structural differences of the binder powder of different types. Sometimes the volume of a bag of cement should take into account additives that slightly affect the weight of the product, but change the numerical indicators when dividing the building material per unit of space.

The density of cement varies starting from the production stage. The density dynamics can be traced during unloading and cargo processes and transportation, and therefore, when calculating how many cubes are in a bag, the average value is taken into account. Moreover, the average calculated figure is called the specific density index (it is individual).

Those who use ordinary Portland cement can find out how much ^{m3} is in a bag of cement by using the simplest ratio. If the specific density of 1300 kg / ^{m3} is 100%, then a 50 kg bag of cement accounts for X%. You can find out the value of X using the following formula: 50*100/1300 = 3.85%. According to this scheme, we get the necessary Cubes from kilograms, having learned that 50 kilograms of cement is 3.85% of the cubic meter. Accordingly, the number of cement cubes is 0.0385 cubic meters.

Important! Similarly, you can find out the number of cement cubes for containers of any size.

## Necessary information about the concrete mix

It is not necessary to know the volume of the cement bag, because many non-numerical factors affect the final concrete composition. Including:

- design level of foundation strength;
- applied brand of cement;
- dimensions of powder packing in dry (supplied) form;
- fraction of filler particles, etc.

Depending on the purpose of the concrete mix, calculate the required number of bags of binder powder until the end.

For example, if you need a 200x30x50 cm monolith, then:

- the volume of cement should be enough to prepare 3 cubic meters of the composition;
- most often used in this case is the composition of branded accessories M200, which is made from powder M400 (not less);
- there is a generally accepted ratio of binder powder consumption when creating unreinforced monoliths — 200 kg per cubic meter, i.e. 4 bags of cement of 50 pre-packaged kilograms;
- the package is enough for 0.25 cubic meters of concrete;
- The required amount of cement is calculated using the expression 3/0. 25 = 12 copies. (Packages).

You can determine the number of cubes contained in the package using the first formula or use the suggested example.