Features of concrete sealants

Content

  • 1 What is sealant used for?
  • 2 What are sealants?
  • 3 Where is sealant used?

Despite the fact that concrete is the most durable material for construction, but it is capable of gradually collapse under the influence of high humidity, temperature changes, as well as other negative factors. In order to prevent this process, sealants are used.

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What is sealant used for?

Concrete is capable of collapsing. This comes from the negative effects of the environment, as well as due to improper mixing of the solution. Sealants prevent cracking, while concrete does not lose its quality.

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To close cracks in the material, a special mixture is used, based on polyurethane. This tool is used for external work.

What are sealants?

According to the method of exposure, they are divided into two types:

  • Surface - used to form a film on the surface that protects concrete from the negative effects of moisture;
  • Penetrating - these are compounds that protect concrete, passing in depth.
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According to the use of the main ingredient, there are:

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  1. Silicone - its percentage is 45% of the total amount of material. It is used to seal compounds in windows, aquariums, as well as in bathrooms;
  2. Acrylic - are used for repair work indoors. Because at low temperatures they are able to lose their qualities;
  3. Bituminous - used for repair and installation of the roof;
  4. Polyurethane - such sealants are considered universal. Because their qualitative characteristics allow them to be used both for internal and external works;
  5. Rubber - used to seal joints of the roof and facade work.
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There are also polymer and silicate sealants.

In addition, there are special sealants for concrete, they consist of two components. They should be mixed well before use.

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Where is sealant used?

Choosing the right composition depends on the purpose of using the sealant. Before purchasing it is necessary to carefully study the information on the package. There should be information about such qualities as:

  • Resistance to low temperatures;
  • Heat resistance, etc.
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Among other things, it should be remembered that it is impossible to use sealant, which is intended for internal work, outside the building. Otherwise, the material will collapse very quickly.

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If the sealant will be used to seal compounds that are located under water, you should choose a composition that is designed for use under pressure. This information is available on the packaging.

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