Injection waterproofing foundation. Injectable Waterproofing Technology Injection Waterproofing Device

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In this article:

The need for waterproofing

Modern construction standards oblige developers to carry out works associated with external waterproofing of parts of buildings and structures underground. Thus, for example, in front of the closure of the bellows from the outer part of the basements of buildings, waterproofing should be applied underground transitions. This insulating method creates the effect of "pressing" of the protective layer to the outer part of the structure, which additionally prevents the penetration of water. Installation of insulation inside builds leads to the opposite, "pressing" effect, which over time affects insulating properties.

Today, the highest quality and reliable protection against water penetration can be achieved by applying the method. injection waterproofing. This method appeared quite recently, but, nevertheless, most experts confidently consider it the best method of isolation of the underground construction of buildings and structures from water exposure.

Advantages of injection waterproofing

In comparison with other methods injection waterproofing has a number of benefits:

Significant savings when carrying out repair and construction work:
- a) Isolation can be repaired on local areas.
- b) the scope of work is minimal both in time and by means.
- c) There is no need to stop the work of the object.
- d) There is no need for land in the case of underground waterproofing.
The method is applicable at any time of the year.
Waterproofing is monolithic - it does not have seams and joints.

Injection waterproofing is all-season,
Performed from the inside of the room

Features Injection technology

This method involves driving through holes in the designs of structures. Through these holes using elongated packers under high pressure on the outer part of the structures, an injection solution is injected. The compositions of insulating solutions are different, their choice is due to the water-absorbing properties of the surrounding soils. To fill the voids of large volumes, fine-grained compounds based on cement binders, an acrylic gel, low grade polyurethane resin are used. Each composition requires compliance with special rules when working with it, compliance with the temperature regime, the use of special pump pumps, etc. Solutions for injection have different response ability: slow, fast, instantaneous.

The most effective and practical in quality and price, in the opinion of many specialists, are polyurethane compositions of Peppelitsel (Penesplitseal) and Penepurfoam. They are resistant to physical exertion, plastic. In the process of interaction with water, they are polymerized. Possess hydroactivity. Polyurethane formulations are used in waterproofing wet and dry cracks, as well as for constant insulation of moving holes.

In addition, the method of injection is possible solid protection of the outer part of the wall of the structure during work from the inside. Sometimes this method of waterproofing is called "Veil". Veil waterproofing is made by means of polyurethane material using a single-component pump. After the preparatory work and the layout of the drilling of the tears, the creation of through holes at an angle of 90 degrees are made directly.

Objects application

Injection waterproofing Applicable:

on concrete
on bricks

Examples of objects on which the most appropriate use of injection waterproofing are:

Tunnels, stations, metro structures;
Foundations of buildings;
Base floors;
Underground garages;
Basements;
Support bridges;
Underground concrete tanks

Often we all face with cases when water flow is observed from some place of construction design. And in conventional ways to eliminate this problem is not possible. However, in the modern world there are new technologies that solve such tasks quickly, very high quality and at an affordable price. One of these technologies is an injection waterproofing. She has features of use for different buildings and conditions.

Injection waterproofing is an excellent method of protecting the structure from moisture. It copes even with pressure leaks in the structure. The principle of operation is based on the injection of waterproofing materials under strong pressure using a special pumping equipment.

For a long exploitation of the building, good foundation hydraulic protection is necessary. Therefore, when building a foundation takes 20-30% of the estimates from the cost of the structure. And that is why it is very important that the foundation be erected in compliance with all rules and rules. And one of these norms is the high-quality device of the foundation waterproofing.

Application

Each building foundation is the main basis. And the use of the building depends on the quality of the foundation. Therefore, at the beginning of construction, waterproofing should be used. It will make the foundation resistant to corrosion and protect against rain and groundwater.

Behind the reliable waterproofing of a concrete base must be monitored. Such a supervision is not easy to organize, as it is not very visible behind filling and building materials. In this case, the effective waterproofing provides waterproofing materials with penetrating effect.

One of the troubles during construction is the capillary rise of groundwater. It takes place between the foundation and the wall, while the free space is quickly filled with water. Such water is often saturated with salts and acids, and with a capillary rise moisturizes the structure to a height of 10 m. From such a misfortune protects good waterproofing of the base of the building.

Injecting can be carried out horizontal waterproofing for cold rooms. Restoration of brick walls will happen much faster.

What is the essence?

The essence of injection waterproofing is to create a membrane between the layer of implanted soil and the enclosing design (wall or foundation). I.e, the hydrophobic gel is injected, which freezes, clogging the pores in the wall and in the soil.

In addition, a similar membrane, depending on the type of injection substance, has a different level of rigidity. Gel plays the role not only waterproofing, but also the reinforcing frame. And the technique itself functions no worse in the time of equipped external hydraulic protection.

This technology is used with planned repairs of tunnels, underground parking and other objects.

Benefits

Injection waterproofing has special advantages over its analogues.

Saves time. Injection can be carried out after completion, and during construction.
Sheets finances. High-quality waterproofing serves for a very long time and does not require frequent repairs.
Decides most problems with leaks.
The injected material is able to penetrate even the smallest pores and cavities.
It has high quality waterproofing membrane.
A high-quality seamless waterproofing coating is created.
Such waterproofing is safe for drinking water.
Throwing time with a certain composition reaches a couple of seconds.

However, due to the difficult work on injecting waterproofing, which is thickly very quickly, specialists need specialists. Therefore, this method is found in the list of services not every construction company.

disadvantages

These method include the following flaws:

Dear materials and equipment.
Specialists are needed for quality work.

However, these minuses are quickly compensated by excellent quality and speed.

Materials

The basis for injections usually use the following compounds:

Polyurethane polymer gels. Pretty cheap and have high efficiency. The polymer gel when interacting with water increases its volume by almost 20 times. This material provides high-quality closure, not leaving the moisture space.
Acrylic acid-based gelsare called acrylate. Acrylate gels have almost the same density that the density of water. This gel quickly harms in the ground, concrete or brick, creating a very solid connection. Also depending on the temperature and ratio of substances in the gel, you can adjust the solidification time. Mixing with the soil, the gel becomes stronger, which ensures its protection against washing and fixes it in cracks and cream.
Epoxy options. This composition solidifies when contacting with air, and moisture only interferes with its frozen. It is used in dry construction.
Cement-sand (mic GEAT). This composition is able to fully fill all the internal expanses, due to this improves the internal structure and creates hydraulic protection.

Injection based on polymer and acrylate gels are most often used. They are hardening when contacting water and have a good penetrating ability.

Auxiliary capabilities

When introducing additional components to the gel, the following properties are achieved:

removal of fungus;
fighting mold;
improving chemical protection of the structure;
reducing the risk of corrosion of reinforcement.

Process

Injection waterproofing technology occurs as follows:

First we study the surface where and in what places we want to cause injection.
Then, along the wall in a step of 0.25-0.5 m, drill small (diameter 20 mm) through holes.
Next, the holes of the same diameter are drilled along the crack.
At the next step, metal or polymer tubes (fittings) are introduced into the holes, to another end of which the valves are fixed.
To the ends of the valves plug the tank with an injection solution. By increasing the pressure in the tank, there is transportation of a solution on the tube behind the wall.
When the solution hardens the tubes, removed from the wall and the outer surface is treated with moisture-resistant plaster.

Buildings from concrete and brick are durable, stable, can withstand strong mechanical loads and temperature drops. But the joints remain between the plates, groundwater penetrate into the deformation seams, and any crack in the wall can become a source of leaks. Waterproofing of concrete foundation, stone or brick masonry prevents "Flood". With it, you can eliminate the existing flows and, embedding the slots in the plates, prevent the appearance of new ones.

Waterproofing injecting implies the restoration of the integrity of the system with hydrophobic material. During the work, the injection of the polymer is made: the substance under pressure is pumping inside the destroyed design. "Warmroy" applies powerful pumps, safe for concrete slabs and bricks. The advantage of the method is the lack of need to perform disassembly disassembly.

"Warmroy" conducts injection recovery:

workers (cold) seams;
deformation seams;
microdefects and cracks;
enterprises of engineering communications;
promotion nodes.

The contractor offers a cut-off isolation device. All works are carried out using modern European sealants.

Cold seams

Pour all concrete structures is simultually technologically impossible. Molecular voltage arises between the old ones, and the new layer. Sooner or later, water begins to be frozen through the work seam. The liquid destroys the concrete slab and inside the reinforcement. As a result, the strength of the entire structure is reduced.

Defect location:

flat or ribbed overlaps;
foundation;
columns;
beams.