Build Daily

Building Materials

August 12, 2017 18:08

Additives for concrete - we bring a stone to fit your needs

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Why use additives for concrete?

Concrete is the basis of modern construction.This kind of artificial stone obtained during solidification selected mixture consisting of cement, aggregate and water.Prior to complete solidification of such a mixture is called concrete.Thanks to its high performance, this building material has received the widest dissemination.

The use of additives is an effective and inexpensive way to improve the quality of the solution.When used properly, the complex additive mixture can be obtained having the desired properties.Modern supplements can increase the strength of concrete, increase the durability and resistance to frost, to reduce its permeability.

Kinds of additives and particularly their use

There are seven major classes of additives:

  • superplasticizers;
  • additives that accelerate the curing;
  • to preserve the mobility of concrete mixes;
  • modifiers;
  • additives for self-compacting concrete;
  • antifreeze additive in concrete;
  • complex additives that combine properties of several additives.

worth noting that imported supplements do not always interact well with domestic cement and additives.The fact that the higher overseas standards for cement and other concrete components.

Thus, using a single additive foreign production requires use of other additives of the same company, it is not economically profitable, since domestic counterparts are much cheaper.

Since additives may adversely affect some of the characteristics of the solution, they should be the number should be determined by a trial test.Depending on the duration of action of the additives should be added in a strict proportion either into the concrete mixture or in water for its preparation.Liquid supplements should be protected from frost.

How do different types of additives?

consider how the properties of concrete change under the influence of various additives.

superplasticizerConcrete increase the mobility of the mixture and allow to give a solution of extra durability, water resistance and density.Used to reduce the consumption of cement, at the same time provide the necessary strength.Curing accelerators are used to increase the strength of branding solution, as well as to increase the rate of curing in the first period of hardening.

In the hot season or during long carriage necessary to add additives which regulate the preservation of mobility of a concrete mix.In winter at temperatures down to -25 ° C the use of antifreeze additive in concrete and solutions allow for the construction work.

concretes which contain modifiers, have a high durability, corrosion resistance, frost resistance, low permeability, the mixture will have a higher mobility.For grouting gustoarmirovannyh and thin-walled designs should be used additives for self-compacting concrete.

Complex additives simplify the process of selection of the components to give a solution of the desired properties, because all the components required to interact well.Most of the additives produced today - a complex action.They are produced either as a finished product, or prepared from the individual components on the batching units.

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