Superplasticizer C-3. Plasticizers for solutions of cement

Superplasticizer S-3 is also known as Superplast-Standard. It acts as an additive to concrete and is a synthetic organic substance, which is created on the basis of the product obtained from the condensation of naphthalenesulfonic acid, as well as formaldehyde. This additive is produced in accordance with GOST 24211-2003 and is positioned as a plasticizing-water-reducing species.

Necessity of application

This additive is used to increase the mobility of the concrete mass and solution mixtures to the level of P5. In addition, if you add this plasticizer, it will eliminate the possibility of early loss of strength, which, in fact, is inherent in most superplasticizers. In some cases it is not necessary to change the setting time, then a highly plasticizing additive is used. Its application is necessary in the case when heavy, fine and light concrete are used in construction . In addition, this additive, which does not affect the setting period, is used in tandem with special cement systems.

Effect of plasticizer on concrete mixture

Superplasticizer S-3 after addition is able to reduce the consumption of cement by 20%, it acts as the most outstanding positive quality of these additives. This substance significantly contributes to the improvement of the technological characteristics of the concrete as well as the mortar mixture. After the plasticizer is in the solution, the latter becomes much more convenient to work with. Thus, it is most easily liable to be laid, becomes more homogeneous, does not exfoliate and differs in integrity. The convenience of laying becomes higher by 30%.

Superplasticizer S-3 helps to correct the loss of mobility of the composition in time. In winter, when laying concrete, it is necessary to heat it. After the addition of the described substance, one can expect a significant reduction in the duration of the temperature treatment of the filled formulation. Then, after hardening, the structure acquires an increased strength and serves for a longer time than concrete without an appropriate additive.

Superplasticizer S-3 also affects the water and gas permeability of concrete. These indicators are negligible. And when exposed to low temperatures, concrete structures are highly resistant. In addition, concrete becomes resistant to all kinds of aggressive environments, which is due not only to compaction, but also to the formation of the structure of cement stone.

After the plasticizer has appeared in the concrete, the master can be sure that the protective effect of the construction in relation to the metal fittings will be greatly enhanced. And to conduct concreting, when there is a special additive in the composition, it is possible even in winter, when the temperature of the external environment reaches -15 ° С.

Reduction of the duration and intensity of vibration processes

As is known, after pouring concrete solution into the formwork, it becomes necessary, according to the technology of work, to influence the composition with a vibrating plate. The duration of such an impact can be significantly reduced after the superplasticizer C-3 appears in the solution, the instruction for use of which will be presented below. In addition to reducing the vibrational effect over time, its intensity can be reduced. Another positive feature of the plasticizer is that its use in the concrete can not only reduce the volume of the scarce large-fraction aggregate, but completely eliminate it. Replace this component can be fine-grained concrete.

Features of using "Superplast-Standard"

Superplasticizer C-3, the instruction for use of which must be studied before use, has excellent characteristics that made the substance so popular in modern construction. The manufacturer recommends using the described additive in a certain dosage, the volume of which is limited to 0.5 to 0.75% by weight of the cement constituent. The calculation is made on a dry substance.

If you decide to use superplasticizers for concrete, then for the expected result it is important to correctly introduce an additive to the ingredients of the concrete mix. You can do this by one of the existing methods. One involves the simultaneous addition of a plasticizer with the entire volume of liquid during the shutting. The second method involves the addition of a plasticizer to the premixed concrete mixture. In this case, the additive is introduced with a large volume of water. The plasticizer can be added even after mixing of the concrete mix, however, it is important to take into account the volume of water. You can choose one method of supplementation depending on the production needs, the technology used and the accuracy of the dispensing equipment.

Characteristics of superplasticizer C-3

Plasticizers for cement mortars are manufactured according to TU 5730-012-97474489-2010. Before starting to use them, it is important to familiarize yourself with the technical features of the additive. So, in appearance it is a homogeneous powder, which should normally have a light brown color. The mass fraction of water in the substance should not exceed 10%. As for the activity of hydrogen ions, this index should be 8.5 + 1.5, which is true with 2.5% aqueous solution. Chlorine, or rather, its mass fraction should not exceed an index equal to 0.1%, which is true for a substance that is in a dry state.

If you started the production of tiles, then you may need a plasticizer for the tile, it is added in the production of the upper layer of products.

Packing and Storage

Plasticizers for cement mortars must be transported and stored according to some rules. So, after the production process, the substance is packed in bags made of polypropylene. In addition, bags must have a polyethylene liner. The weight of each bag is 25 kg. Store the plasticizer only in the manufacturer's packaging, otherwise the composition may soon lose its quality characteristics and will not be suitable for subsequent use. Among other things, the additive should not only be packaged, but also be in a covered warehouse.
But the superplasticizer can be transported by any type of transport.

Description of superplasticizer C-3 in granules

There is another common type of plasticizer, which is produced according to TU 2481-111-07511608-2012. In this case, the substance has the form of microgranules, which have a light yellow or brown hue. The main characteristic of the composition is expressed in the bulk density, which is equal to the limit of 0.50-0.80 g / cm ³ . The mass fraction of water in the plasticizer of such a variety should not exceed 10%. But the indicator of the activity of hydrogen ions varies from 7 to 10. What is true for an aqueous solution whose mass fraction of matter is 2.5%.

Packaging and storage

Such superplasticizer should be stored in polypropylene bags, the weight of which after filling with the substance is 20 kg. Keep the composition is also necessary in indoor warehouses of any type. But to use the manufacturer recommends plasticizer for 1 year.

The cost of different types of plasticizer C-3

Superplasticizer, the price of which varies depending on the version, should be purchased only after the calculation of the required amount of material. This will significantly save on construction work. Thus, if there is a need to use a liquid plasticizing variety of additive to concrete, then you have to pay 28 rubles per kilogram. But the plasticizer in the powder can cost much more. Its price per kilogram can reach 120 rubles.

Whichever you choose for the construction of superplasticizer - liquid or dry, you need to know in advance about the features of its use. After all, incorrect application can lead to additional costs, and the expected result will not be obtained.