Repair mixtures for concrete. Varieties, characteristics, instructions

Probably, now there is almost no one structure, the construction of which would not have used concrete. However, over time, it loses its quality characteristics, and the design itself can break down. To prevent this from happening, it is necessary to apply repair mixtures for concrete. And they should be used already when you notice a slight damage. Naturally, it is necessary to understand the properties and features of the application of this substance.

What is the product and what is it for?

Repair mixes for concrete are specialized tools that include sand, cement, various additives, fillers. Thanks to them, the substance has a certain set of characteristics necessary for a qualitative restoration of the structure.

Such compositions are used to eliminate defects, damage in walls and ceilings of structures, floors of houses. In principle, the tool can be applied wherever there are concrete structures. Naturally, such a product has certain properties.

Material properties

Repair mixes for concrete have the following features:

1. They are resistant to temperature changes, and also do not crack in the frost. That's why they can be used not only inside, but also outside the room.

2. Due to the fact that the substance has a good vapor permeability, condensate will not be collected in the renovated room.

3. Repaired with the help of this solution designs last a long time.

4. High-quality material is characterized by a high degree of strength.

5. Thanks to various additives, concrete repair mortars have good adhesion, so it's easy to work with them.

6. Antiseptic impurities protect the restored structures from the appearance of fungi and mold.

As you can see, the repair mixture for concrete, the instructions for use will be presented to you a little later, has a large number of advantages over other means.

Features of product selection

Each damage requires a special approach, so you need to know which composition suits your case. Select it follows the following criteria:

- Severity of damage, its nature.

- Conditions of use of the structure (eg high humidity).

- The impact of negative factors on the design.

- Technical characteristics of the material, as well as its properties.

- The temperature regime in which the use of the acquired substance is permitted.

- Durability time.

- The need for other means for surface treatment (primers).

- The need to dilute the ingredients (it is better to purchase the finished material).

- Consumption of substance per square meter of area.

- Shrinkage.

- The cost of the product.

Since it is quite difficult to choose repair mixes for concrete in the current variety of materials, the above tips will help you to quickly decide on the purchase.

Varieties of the product

Now we need to classify these materials correctly. So, if you need mixtures for repairing concrete, the varieties of them may be:

1. In terms of scope:

- Restoration of concrete structures. Moreover, such means are used to eliminate shortcomings in conventional as well as bearing structures.

- Repair of roads, floors. Such materials are characterized by increased resistance to frost, additional water-repellent properties.

- Protection against corrosion. They also prevent the appearance of mold, as well as fungal diseases.

2. At the place of use:

- For vertical surfaces. They are more dense, have a strong adhesion.

- For horizontal surfaces. Such substances are more durable, can withstand heavy loads.

In addition, it is possible to separate such materials into shrinkage and non-shrinkable repair mixtures for concrete and brick. The latter option is the most preferable, as it provides an acceleration of the restoration work, it is very convenient to use. And yet you can quickly calculate the amount of powder required and the thickness of the layer.

Sequence of repair works

So, the whole procedure consists of several stages:

1. Thorough inspection of the damaged structure and determination of severity of failure.

2. Determination of the causes and factors that contributed to the appearance of irregularities, potholes or cracks.

3. The choice of tools and the required composition.

4. Carrying out all necessary manipulations.

5. Quality control of work performed.

Types of Actions

So, the mixture for repair can be used for the following types of work:

- Restoration of the structure. To do this, most often used substances that can quickly dry out. And they can be applied not only for horizontal, but also for vertical surfaces.

- Leveling the surface. In this case, dry powders or casting products having a liquid consistency may be used. However, if the site requires special attention, then it is better to use reinforced fiber.

- Elimination of cracks and potholes. It is best to use injection epoxy resins for this purpose . This is especially necessary if the crack is in the ceiling or wall. If the floor is damaged, then a special liquid composition can be used. No pressure is required.

- Strengthening concrete and strengthening its strength. In this case, primers of deep penetration are excellent.

To remedy the damage, you can use the substance CN 83. The repair mixture for concrete "Ceresit" is very popular, as it has high strength, good adhesion and other technical characteristics.

Preparation for repair

Before you restore the destroyed wall or floor, it is necessary to collect all necessary tools and materials. You may need: a bucket for compounding substances (if you have not purchased a ready-made version), a trowel, a metal rigid brush and, in fact, a repair mixture. Of course, you need to wear working clothes, since during the manipulation possible spray solution and dust.

In addition, it is necessary to prepare the surface itself. The damaged area is cleaned of dust, unreliable pieces attached and ground. It will also be necessary to handle the metal parts of the structure, especially if they are rusty. For this special chemicals will be useful. In addition, for better adhesion of the repair mixture, the treated surface should be coated with a deep action primer.

Helpful Tips

For ease of use and maximum effect, use the following tips:

- If the damage is too strong, then the substance will have to be applied in several layers.

- In case the shrinkage of the composition does occur, it is necessary to lay out the solution again.

- In order that the old surface does not absorb the liquid from the mixture, it is necessary to prime it well and allow time to stand.

- You can use a hard brush to apply the solution. It will make the connection with the surface as strong as possible.

- Each new layer of mortar should be applied only after the old one has dried well. This may take several hours.

- After the work is completed, try to spray the fixer onto the treated surface. Such a technique will help to protect the renovated area from new destruction for a long time.

That's all. Good luck!