Dedusting of concrete floor: technology, materials

If you build a concrete floor on technology, it will be distinguished by its durability and reliability. This base is a practical floor covering and can itself fulfill the role of an exploited surface.

Necessity of dedusting

In the process of using a concrete floor, one can notice one drawback, which is expressed in the formation of a large amount of dust. In production facilities, it can become a serious problem, expressed in explosive.

Any person who has at least a small experience of construction and repair work can independently spray a concrete floor. To do this, there are many techniques that can be used in a complex or separately.

The causes of dust in the operation of concrete floors

Before the dedusting of the concrete floor, it is possible to become more familiar with the characteristics of such a foundation, which lead to negative consequences. The reasons lie in the structural structure of solidified concrete. This conglomerate mixture is composed of different materials, which differ in size and chemical composition. The crystalline silicate lattice formed during the maturation of the cement stone is intersected by coarse fractional fragments of insoluble gravel and sand filler.

If you look at a section of concrete under a microscope, you can see a pronounced porosity - from microscopic to large pores, which are filled with gel cement substance, water and air. There are a lot of chemically active, unconnected substances that are unnecessary ballast and cause erosion processes, which is especially true for the upper layers, which are characterized by low strength. If you study the characteristics of concrete in more detail, you will be able to understand that during the maturation of the composition, cement milks come out onto the surface, which, when hardened, forms an unstable layer, which is the main source of dust formation.

Solution

In order to exclude these processes, the surface can be hardened or the upper unstable layer can be removed. Sometimes it is bound with additional crystalline formations or a polymer structure. Hence, three approaches to solving the described problem follow: surface hardening by topping application technology, impregnation treatment or grinding. In order to achieve the most positive result, quite often the technologies are used in a complex way.

Topping

Dedusting of the concrete floor can be done by topping, which is very similar to ironing. The last of these technologies involves rubbing dry cement into uncured concrete. The essence of topping is almost the same, but instead of cement, a multicomponent mixture is used, which acts as a reinforcing agent. Among the ingredients can be distinguished high-quality Portland cement, fine fraction filler and chemical additives. The surface layer after completion of such work is more durable. If dedusting concrete floor by topping method, then you can change the color of the surface, making it yellow, gray, blue, black, brown, red or green.

Selection of material for topping

Depending on the fillers, the compositions for topping are divided into several groups: metallized, corundum and quartz. The latter variety is inexpensive and the most common. These blends include fillers in the form of quartz sand, well purified in the manufacturing process. Additionally, colored decorative pigments can be used. Quartz topping increases the strength of the surface by a factor of 1.5, which is sufficient for long-term operation of floors subject to medium load.

Having visited the store of building materials, you will understand that quartz topping is universal. It is widely used in warehouses, educational institutions, shops, hotel lounges and shopping centers. If it is a residential space, then quartz topping is perfect for conditions with high humidity and increased load. More effective are corundum hardeners, which raise the resistance of the floor to mechanical loads by 1.8 times, to abrasion - by 2 times. The composition contains a filler in the form of corundum chips, which is resistant to abrasion and abrasion. It gives the surface a matte finish.

Topping Technology

If you decide to dust dedusting concrete by topping, you should be aware that the technology is complex and requires experience. If errors occur, you can observe the formation of cracks, the erasing of the top layer and the peeling of the crust. This method can be applied only on high-quality reinforced, concrete-filled M-300 grades. The mixture of the base of the base should be seized, but not cured. Typically, such work begins 8 hours after the completion of the installation. On the basis of the floor, there must remain imprints, the depth of which does not exceed 5 millimeters.

Methods of work

On the surface, a reinforcing agent crumbles, which should be 65% of the total volume. It should be distributed manually or by means of a loose trolley. When the mixture is saturated with moisture, the concrete surface must be treated with a trowel. The composition is rubbed into the base until completely absorbed. Then you can start applying the remaining part of the topping to the surface in an amount of 35%. These manipulations must be carried out slowly, so that moisture remains.

The next step will be grouting the surface, and after 2 hours you will need to grind the machines. This will form a matte finish on the surface. Together with topping, a concrete coating is applied in the form of special impregnation - kuringa. In order to avoid the formation of cracks during drying, the surface must be covered with a plastic film. After 24 hours, when the concrete has solidified, it is necessary to make seams with the help of a carver or a grinder with a diamond disc. As a rule, they have the form of a square with a side of 6 meters and a depth of 1/3 of the thickness of the plate. The width should be about 15 millimeters. After 28 days, the joints should be filled with polyurethane sealant.

Dedusting the floor with a fast hardening compound

When consumers visit the building materials store in order to purchase a means for dust removal of the floor, they often pay attention to self-leveling floors. If you also decided to use this technique, you should become more familiar with the technology. It provides for preliminary priming, which will prevent the penetration of air into the filling floor and prevent the formation of bubbles. The application of this composition is carried out on a clean surface with a roller, and in order to improve the adhesion to the filling floor, it is necessary to pour fine-grained clean sand on the still not dried ground.

In the next step, you can fill the fast-hardening floor, which consists of the base and finishing layers. In the first case, the thickness should be a limit of two to three millimeters. Apply to the application 12 hours after priming. This is true for the polyurethane floor. If you chose epoxy floor, then you need to wait 17 hours. A day after the application of the base, you can start pouring the finishing layer, its thickness will vary from 1 to 2 millimeters. In order for the fast hardening floor to have a gloss, it is recommended to complete the installation with a thin layer of polyurethane varnish.

Use of impregnations

The characteristics of the concrete described above allow the master to understand the master before the floor has been made so that it is a source of dust during use. That's why you should choose technology, preventing this trouble. As an alternative solution it is possible to use impregnations that are applied to a strong and prepared floor. To do this, the surface is repaired with epoxy putty, and also freed from flaking elements and debris. To combat dust, you can use a building vacuum cleaner, only after that it is recommended to start applying the impregnating composition. Deep impregnation for concrete is applied in strips, leveled with brushes or rakley.