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In the field of construction, protection against moisture is one of the primary tasks. Under the influence of sharp jumps in temperature and moisture, destruction and deformation occur. Such problems will help solve these problems Construction Materials, as waterproofing mixtures. They are presented in a wide variety, and their choice depends on specific goals.
Penetrating
It is used to protect the structure under hydrostatic pressure when the surface is in direct contact with water.
When making the mixture, white cement, sand and chemical additives are used. The peculiarity of penetrating waterproofing is that it creates a waterproof layer inside the structure itself. Active components allow the composition to easily penetrate into the pores of concrete. In the course of a chemical reaction, substances crystallize and close small cracks.
Advantages:
- high efficiency (it can be applied to internal and external surfaces);
- ease of preparation and application;
- resistance to wear.
The disadvantage of penetrating waterproofing is that it cannot be used for structures made of cellular concrete, brick and asbestos cement.
Dry plaster
This is the oldest method of protective mixture. The peculiarity of the plaster mixture is that it has no limitations in its use. It is necessary to apply the composition in a layer of 15-25 mm or more.
Advantages:
- ease of use;
- can be used for processing external and internal surfaces;
- suitable for bases made of any materials;
- the treated surface can be finished with the help of painting or cladding;
- if cracks appear, they can be removed with the same solution.
If special additives in the amount of 5-10% of the total volume of cement are added to the dry plaster mixture, then an armored durable waterproofing with minimal shrinkage and high impact resistance will be obtained.
Lubricating waterproofing
When making the composition, mineral binding and polymer additives are used. The main advantage of coating waterproofing is high elasticity. It is applied to a concrete surface exposed to vibrations and dynamic loads. The resulting coating is resistant to the formation of cracks. After applying the waterproofing, an elastic film is formed, which has no seams. Tiles and decorative covering can be laid on top.
Pawn shop
The scope of its application is waterproofing of underground parts of structures. A dry composition of powders is laid in the space between the ground and the foundation. They are hydrophobic and expand when moistened. As soon as moisture enters the foundation waterproofing, the substances of the mixture swell and form a strong lock. It prevents the penetration of water to structures.
