Impregnates are used to protect the surface of concrete, brick, stone, sandstone and other building materials against the penetration of chloride ions, against penetration of non-pressure water and to protect the surface from aggressive environments. The impregnation improves the resistance of mineral surfaces to abrasion and erosion processes. Impregnation can protect the surfaces of materials from the effects of thermal shock, freezing and thawing in the presence of salt and without salinity.
How does the impregnation work?
Impregnating preparations are applied by painting techniques to the surface of the concrete or finishing element, obtaining a long-lasting protective barrier after drying. Impregnation consists in coating the surface with preparations based mainly on synthetic resins: epoxy, polyurethane, acrylic and others. As a result of the impregnation of the pores and capillaries in the concrete in the near surface layer, they partially or completely fill with the resin preparation, and a thin, discontinuous coating is formed on the surface of the concrete. The concrete surface is sealed and reinforced.
What are the hydrophobic properties of a concrete facade?
In addition to the classic impregnation method, you can protect mineral materials by using the surface hydrophobization method. Hydrophobic impregnation consists in coating the concrete surface with hydrophobic preparations containing silicone or siloxane compounds. The hydrophobic preparation penetrates into the surface layer of concrete and adsorbs on the surface of the pores and capillaries. The appearance and tactile sensations of the surface usually remain unchanged or the surface slightly diminishes. As a result of the hydrophobic impregnation, the surface of the concrete acquires hydrophobic properties, i.e. properties repelling water molecules. Hydrophobes reduce the absorbability of the material, thus limiting the formation of mold, fungi and salt efflorescence.
One-component preparations in the form of liquid, with high penetration ability, intended for surface protection of the substrate against weather conditions. They are used to protect natural stones from sandstone, limestone, slate, gypsum, brick and concrete against the penetration of moisture. They form a hydrophobic coating that prevents capillary diffusion, which protects against the formation of mold, fungi, salt efflorescence, as well as increases the frost resistance and surface waterproofing properties.