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Concrete

August 12, 2017 18:06

Antifreeze additive in concrete

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Antifreeze additive in concrete

Concrete is one of the most common building material, which is used everywhere - thanks to its excellent durability and reliability.

process of its creation is associated with the procedure of mixing the solution, which is in process of solidifying and forming the resulting solid, monolithic structure.

Mixing the solution can not be made without the use of water, which serves to give the weight of viscosity and is actively involved in the formation of a concrete block.

process of hydration of binder and the solid concrete under normal conditions is sufficiently fast and the quality of the final product, typically, there is little on which depends.

However, at low temperatures (starting at -3 degrees Celsius or below) of the key processes slows down because the water starts to freeze.

If the solution is put back in a comfortable temperature conditions - the process resumed, but there may be a serious loss of quality associated with the fact that in the process of freezing water expands and finally, after thawing, concrete is considerably more fragile izthe abundance of microcavities.

common practice for building is to create optimal conditions for hardening of concrete by maintaining a comfortable, warm temperature, but there is not always possible to create them.

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In such cases - antifreeze additives used in concrete, which is almost completely negate the problems that arise in the process of hardening of concrete at low temperatures.

Also they have another useful property.

the most part, antifreeze additives increase the hardiness of the final unit, thereby improving its performance and extending the period of use.

How and why are they used?

As already mentioned above - concrete virtually no cures at low temperatures, and if it does so, the quality of the material is hardly high.

It is in cases when the construction can not be postponed until the time of raising the average daily temperature is advisable to use antifreeze additive in concrete.

In some industries, pouring concrete around the place is built closed box, in which the air is heated to a positive temperature and maintained until the concrete has set.

But this method is applicable not always.

The first thing to understand - construction area is different, so it's appropriate, but to cover the foundation of a residential home will be difficult in the construction of a small bath.

Plus, solve the problem of air heating - it is often very difficult.Of course, you can apply for this heat gun, but it is costly and time and financially.

It is for the elimination of all these difficulties, and were invented antifreeze additive for concrete.

Their principle of operation is simple and complicated at the same time.In fact, they react with the water, significantly lowering its freezing temperature.

Biopan B-4 , antifreeze additive

However, they do not impair its structure and does not change the properties so that their use did not affect the final quality of the product.

estimated consumption antifreeze additive in concrete depends on the ambient temperature.Additives miscible with water, which ultimately used to create concrete.

If temperatures above -10, the concentration of the additive should be around 5% (1/20) at a temperature of from -10 to -20, use ten percent solution (1.10).

Then all developing in the same progression - for every 10 degrees of the thermometer, the solution becomes more concentrated at 5%.There is in this system, and a small limit.

antifreeze is not recommended at temperatures below -50 degrees.

This is because the solution will overly concentrated, which may result in a shortage of water for solidification and formation of normal concrete mortar.

If we consider the structure of antifreeze additive in concrete, it is easy to see that, depending on the manufacturer - it can be changed.

Nothing surprising and frightening about it.

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By antifreeze additives include substances such as:

  1. potash (potassium carbonate);
  2. calcium chloride;
  3. sodium chloride;
  4. sodium nitrite, and mixtures thereof.

also as antifreeze additives are often added to a variety of organic salts.

difference in structure is due not only to the manufacturer's preferences, but also the properties possessed by each of the elements.

is also worth noting that the use of only one of these elements makes it impossible to obtain concrete having a set of properties (viscous mobility, strength, water resistance).

Because of this - most of antifreeze additives is a mixture of different elements.

As with any other construction material, there GOST antifreeze additive in concrete.

Compliance regulated it necessarily rules for both the producer and the end user (builder).

GOST 22266-94, here are a number of vowels is the set of rules and requirements for antifreeze additive.It is highly recommended to choose a supplement indicating compliance with this GOST.

Applying antifreeze additive in concrete corresponding to a given place You can be confident in the quality of the final product.

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Usually, all Russian-made supplements are a sign of conformity to GOST, but on foreign products there is no such mark.

By the choice of mixtures of European production should be approached with caution, and it is better not to approach too does mean a big difference in the field.

Prices

With the acquisition of antifreeze additives no problems arise money had.

usually buy antifreeze additive in concrete can be in any hardware store, and in large shopping malls or specialty stores usually have a choice of either a dozen different supplements from different manufacturers.

Usually the price antifreeze additive for concrete is quite low and ranges from 80-150 rubles per pack (5 liters).

Of course, depending on the manufacturer and the price can differ from this, however, building materials, especially consumables, this is the category in which the product is clearly not worth it to overpay for packaging.

Gidroteks - PMD

antifreeze additive overseas production typically cost almost twice cheaper than domestic.

reason is not high quality, and costs related to transport.

In general, it is advisable to give preference to Russian producers not only to save, but also due to better adaptability to climatic conditions.

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