Bsg concrete: brands of solutions and their characteristics

19-02-2018

Building

Many do not understand what this abbreviation means, meanwhile decoding of concrete AAH is very simple and means concrete mixes, ready for use. Guided by this factor, we can conclude that this group includes all the solutions supplied in finished form. They must be used immediately after receipt, as a rule, the period of use does not exceed two hours.

All finished solutions are divided into brands depending on the properties and characteristics.

Key indicators you should know

Consider what properties should have a mixture of concrete BSG according to GOST 7473-94. "Concrete mixes". The standard applies to all solutions for the construction of various structures, both in industry and in other areas.

Requirements do not apply only to special brands of concrete with specific properties and used for certain works.

Characteristics of solutions

Depending on elasticity indicators, ready-made concrete mortars are divided into 3 groups:

СF	The so-called super-rigid compositions are characterized by a very thick consistency, which is associated with some difficulties in the work, but in some cases this option is the only possible
F	Solutions with moderate hardness, we can say that this is one of the most popular options, which has average properties and with which it is convenient enough for specialists to work on most objects
P	Pодвижные составы, в которых присутствует достаточно много воды. Чаще всего используются в случаях, когда для заполнения всех пустот требуется довольно подвижный раствор

In the photo - hard concrete, which is not very mobile, but its strength indicators at the highest level

An important feature is the indicator of cold resistance of concrete. The value indicates the number of freeze-thaw cycles that the material will withstand without loss of performance properties and deformations. This indicator is indicated in the marking by the Latin letter F. For example, the value F50 indicates that the material that has gained strength can withstand 50 cycles.

Note! In areas that are characterized by low temperatures, it is necessary to acquire a composition with improved frost resistance properties - F500 and above. This guarantees the durability of the buildings being built.

Such a criterion as watertightness is of great importance if the solution is used for the construction of bases and pouring foundations in the ground. The indicator indicates how much water pressure concrete can withstand and is denoted by the letter W.

For example, W15 means that the construction of the material in question is capable of withstanding a pressure of 15 kgf / cm2. The higher this property, the higher the price, so taking too expensive formulations is unprofitable.

Moisture resistant grades are used to build structures subject to constant movement of water.

Brands of solutions

Можно сказать, что это основной показатель, определяющий, насколько тот или иной состав устойчив к деформационным воздействиям. Pоказатель измеряется в кгс/см². It doesn’t matter if you buy a ready-made solution or do it yourself, the brand is of paramount importance.

Consider the most common brand and features of their use:

M100 - this brand is used as a substrate when pouring a concrete foundation or monolithic bases. Also, this option is perfect for fixing curbs and as a preparation for road paving.
M150 is perfect as a preparatory layer for various monolithic foundations, this option is also suitable as a basic material for the foundations of small buildings and extensions.. Very often, with the help of this solution, screeds are poured and the paths are concreted in the household and suburban areas.
M200 is used for pouring full foundations, both tape and monolithic and pile. Also with its help you can make a reliable tie even in rooms with high loads. The composition is great for the device of staircases and ramps.

M250 is much rarer than the above option and is most often used for pouring high-strength monolithic foundations.. Sometimes it is also used for tape bases, if circumstances require increased strength and reliability.
M300 is the most used brand in the construction industry, reinforced concrete slabs are made of it, ready-made staircases, monolithic walls and floors are poured. Also, this option is widely used in the manufacture of concrete fences and posts to them.

Widespread concrete fences are made of exactly three hundred concrete brands.

M350 is used for massive slabs, beams, lintels and girders, as well as other various structures, in the industry of concrete products this option is most in demand. In addition, pools of bowls are made of it, plates for airfields and other places with high loads are made.
M400 - this option is almost never used in private development.. Most often, various elements of bridge structures and reinforced concrete products of large sizes are manufactured from this brand. In addition, the instruction for the construction of bank vaults prescribes the use of this option for their construction.

High-strength concrete and massive reinforcement - essential attributes of bank vaults

M500 - is used extremely rarely, the main areas of application are the construction of subways, dams, bank vaults and structures on special orders.

Conclusion

When choosing a ready-made solution or preparing it independently, it is very important to choose the optimal brand, and the strength and durability of the structures depends on it. The video in this article will help to understand some of the nuances even better.