What weight does a cube of concrete have?

The weight of concrete is a very important value for the construction and dismantling of concrete buildings. This is a very important construction material and will depend on the characteristics of the construction of the foundation and the floor of the house. The same indicator is used to determine the number and transport capacity necessary to remove the debris when the building is destroyed. But how can we calculate how much the concrete cube weighs?

What determines the weight of a cube meter of concrete?

Nobody will give a clear answer to this question without asking some clarifying questions first. The weight of the concrete is a quantity that depends on a combination of different indicators, for example:

– Cement:
Apparent density: varies from 0.9 to 1.2.
Absolute density: varies from 2.8 to 3.2 depending on the type of cement (CEM I, CEM II, III, CEM IV, CEM V).

– Aggregates:
Apparent density 2.63 kg/dm/cube.
Density in the pile in the softened state:
-0-4 = 1410 kg/mc
-4-8 = 1390 kg/mc
-8-16 = 1360 kg/mc
-16-25 = 1380 kg/mc
-Piatra Sparta CF 31.5-50 = 1580 kg/mc.

– What It has a density of 1.0 (reference material for calculating density).

– Additives: density from 0.9 to 1.3

Concrete categories

Depending on the above factors, the following types of concrete are distinguished from each other depending on their specific weight, that is, the mass of a cubic meter:

Cement B150, C8/10

It is a concrete often used in the applications of unarmed concrete as a layer of equalization of the bases or as a support layer for reinforced concrete. The concrete B150 can only be pumped if it has most of the fine aggregates in its composition with maximum dimensions.

Beton B200, C12/15

B200 cement It is used in simple concrete or reinforced concrete structures, in elements such as bases and floors. B200 cement It can be used based on constructions and vertical elements such as: poles and light bulbs, in car masonry -sustety, for belts or plates. The B200 concrete can only be pumped if it has in its aggregates of composition with maximum dimensions.

Beton B250, C16/20

B250 cement It is used for the execution of reinforced concrete bases, floors, to produce vertical elements, such as resistance poles, but also in the execution of rays, belts and plates. B250 concrete is the most often used type of cement on the usual ground floor or on the ground floor and 1 floor. B250 cement It can only be pumped if it has in its composition aggregates with the size of the maximum 16 mm.

Cement B350, C20/25

Cement B350 It is of the upper class used above all in the construction of vertical elements: support poles, rays with large openings or large loads, plates, special or usual bases but on which there are large loads and other elements in which the conditions impose a higher concrete class, a concrete with a high concrete content. Cement B350 It can also be used for situations where a reduction in the decofting time is required.
Cement B350 It is also recommended to carry out special works in which the conditions of permeability and resistance to the chemical attack are very important.
Cement B350 can also be used outside in the execution of the alleys, road platforms with light traffic at low speeds, in the production of hydrotechnic works such as swimming pools, tanks, swimming pools, ditches. If the concrete is used outside, the concrete recipe changes: it differs the type and concentration of cement, the type of additive, it is possible to add reinforcements dispersed with fibers or polyethylene flakes.
Cement B350 It can only be pumped if used in its aggregates of composition with maximum 16 mm size and are not incorporated polyethylene or metal needles.

Beton B400, C25/30

Cement B400 It is a upper class concrete used in civil, industrial or special works. Cement B400 It is used in pilot -type bases, wet drivers, crowned beams or naked bases, in the construction tires with high height regime and with high pressures on foundation soles.

Table with orientative weights of different concrete classes

Conclusions

The mass density of traditional concrete is of the order 2.2 The 2.4 (Ie the density of concrete is between 2200 and 2400 kg /m³ concrete).
Its density varies according to the density of the constituent elements (mainly aggregated and gravel), their dosages (forms of cement), but also of the amount of air contains (air replaced during production, transport with mixer and casting trucks). For example, the concrete that has been well vibrated will contain some air. Therefore, it will be very compact and more difficult than the concrete that has not been vibrated and will be porous.