Penetrating waterproofing of concrete. Additive in concrete for waterproofing

Waterproofing concrete is necessary in order to protect the material from the damaging effects of water. Recently, the most common among all other types of waterproofing penetrating action.

Necessity of waterproofing works

Concrete only seems monolithic, but in fact it has pores through which water penetrates, destroying the elements of the reinforcement. A sign that the concrete is saturated with water is the detachment of plaster and other decorative coatings, the appearance of fungus and mold, as well as cracks. In order to avoid such phenomena, penetrating waterproofing is used.

Pros of penetrating waterproofing

Penetrating waterproofing of concrete has a lot of advantages over other types of materials for protection. If you make a comparison with pasting materials, they serve very briefly, in addition, through the joints can penetrate the water. And if you do the work, not observing the technology, then under the roll there may be air, which sooner or later will cause the detachment and penetration of moisture. If we consider the construction bitumen, it does not have sufficient ductility, which causes the cracks to appear at the time of shrinkage of the substrate. Mastics, for example, although they possess the necessary qualities of elasticity, but are subject to mechanical influences.

Peculiarity of penetrating waterproofing

Penetrating waterproofing of concrete is unique in the principle of its operation. Having a liquid consistency, it penetrates into the pores and fills small cracks.

The material is realized in a dry form, it must be diluted with water, and then applied to the walls, applying a brush (you can replace the latter with a roller). However, if there is a desire to finish the work as soon as possible, it is recommended to use a nebulizer.

After application, the liquid waterproofing merges with the concrete, prolonging the life span of the structure. The material consists entirely of natural ingredients, so it does not pose a health hazard. Work with the composition can be both inside and outside the premises. It's extremely easy to use. After the polymerization takes place, concrete finds a single film, which is not afraid of mechanical effects. Excellent adhesion characteristics do not allow the material to depart from the substrate.

Among the positive features can be distinguished ability:

• Protect the concrete from moisture penetration;
• Prolong the life of the structure;
• Strengthen the foundation that was just erected;
• Protect the valve.

Area of use of penetrating waterproofing

Waterproofing of concrete penetrating action has found its wide distribution. In addition to external protection of the buildings' grounds, it can be used to process the inner surfaces of the basement walls , waterproof the swimming pools, and process the concrete surfaces of the bathrooms and kitchens.

Preparation of concrete before applying waterproofing

The surface must be prepared, for this it must be freed from the old paint, dirt, grease stains. It is essential to rid the base of fungal foci, as well as mold, if such occur. If there is a weakly hardened plaster on the surface, it must be disposed of by applying a deep penetration treatment with a strengthening primer.

Liquid waterproofing of concrete should be applied on a flat surface. Therefore, if there are cracks on the base, it is necessary to get rid of them, initially having carried out the batching and processing the special compositions of the penetrating action. Areas of passage through the design of communication systems should be well sealed.

Features of application

If you have to work with a new concrete foundation, then the application of the composition should be done with a layer whose thickness is equal to 1 mm. You can process communications that come out of the foundation and floor. Use in the case of liquid composition is recommended brush. In the sale there is a waterproofing of concrete, which is intended for application with a spatula, which is advisable when the old foundation needs protection. It is necessary to apply a layer whose thickness is 2 mm.

There is a penetrating mixture designed to protect joints, as well as mating of concrete products. The material does not shrink. Before processing, the joints should be dilated 2.5 cm deep.

The waterproofing of the penetrating concrete can be represented by a repair mixture that is capable of eliminating faults and large cracks in the base of the house. Use the composition in tandem with the reinforcing mesh. The thickness of the layer should be approximately 10 mm, only then it will be possible to achieve a positive result.

Additive for waterproofing

In order to give concrete waterproofing qualities, sometimes use special additives. They are presented in the form of dry composition. The consumption of the mixture is very small and equal to 1% of the mass of cement, which is used for mixing the solution. If you do not know the volume of cement, then you should use 4 kg per 1 m ^{3 of} concrete.

The additive to the concrete for waterproofing is used with a solution, which is poured into after the connection with water. Initially, it is necessary to combine the additive with water, following the recommendations of the manufacturer. As a rule, 0.75 liters of liquid should be used per 1 kg of the formulation. Stirring should be done within two minutes, using a drill set at low speed. It is not necessary to make such quantity of a mix which you can not work out within 5 minutes. The prepared mortar should be poured into the concrete mixer without stopping the stirring for another 10 minutes. Only after that it is possible to pour the solution into the formwork.

Such an additive in concrete for waterproofing, as a rule, can be used with other components, for example, plasticizing or antifreezing. You can choose the composition for the waterproofing of concrete, with which it will be more convenient for you to work. Features of the main ones were described above. But the waterproofing of concrete, for example, does not have as many advantages as penetrating, so it is recommended to use the last one.