Foundation injection waterproofing. Injection waterproofing: advantages, materials, technologies and applications Injection or penetrating waterproofing which is better

Today, the term "injection waterproofing" can be understood as a very wide area of ​​waterproofing work.

And often there is a substitution of concepts or ordinary confusion.

The purpose of this article is not the ultimate truth, but our idea of ​​​​this fairly popular, currently, concept that we want to convey to you, based on a specific example: the availability of materials for injection waterproofing in the line of materials for the PENETRON waterproofing system.

To begin with, let's understand the terms a little, so that we ourselves do not allow the substitution of concepts or confusion.

Waterproofing - a sequence of measures using special building materials, the purpose of which is to prevent contact with a specific building structure or to prevent the penetration of water into the building structure.

Types of waterproofing

All of the above types of waterproofing combine the following disadvantages:

• they all form a waterproof coating on the concrete surface
• with the exception of plaster waterproofing, they all require a protective coating against mechanical damage
• in the event of mechanical damage or destruction of the integrity of the waterproofing coating created with their help, the concrete structure becomes defenseless against water
• to prevent contact or penetration of water into the concrete structure, all of the above types of waterproofing can only be used at the construction stage, since they are applied only on the outside of the protected structure, forming a waterproofing coating on the concrete structure from the ground (for underground structures) or water (for structures which come into contact with water during operation)
• when water penetrates into the premises, to restore the waterproofing of the above types, a complete excavation of the structure, the creation of a new waterproofing coating and backfilling of the pit are required.

Penetrating and injection waterproofing: buy and waterproof concrete

The following types of waterproofing are fundamentally different from those listed above, as they change the internal structure of the concrete structure in different ways, turning the concrete itself into a waterproof environment.

These types of waterproofing can be divided into the following categories:

1. Penetrating (penetrating) waterproofing:

The principle of operation of this waterproofing is due to the special chemical composition of the penetrating waterproofing material and the method of "delivering" these special chemical components into the concrete mass, followed by a change in the structural composition, giving the structure the property of water resistance.

The second name of this type of waterproofing is penetrating, it is no coincidence.

So this type of waterproofing began to be called by the name of the company, which 50 years ago was the first to produce waterproofing materials of penetrating action - PENETRON.

And when these materials began to gain more and more popularity every year, these materials, and then the type of waterproofing, began to be called "penetrating".

2. Injection or injection waterproofing, the price of which, by the way, is quite low:

To perform waterproofing work using the technology of injection waterproofing, special equipment is required, since, unlike penetrating waterproofing (when the waterproofing material of the penetrating action "PENETRON" penetrates into the concrete as a result of physical processes, and water resistance is imparted to concrete to the full thickness of the concrete as a result of chemical processes)
injection materials are injected into the concrete under pressure by special pumps.

In addition, injection materials, in contrast to the penetrating material, are not chemically similar to concrete, usually they are polymeric compositions, which, due to their initial viscous flow state, are called injection resins.

Because injection resins are much more viscous than water, they cannot fill the capillaries of concrete, so concrete injection is usually a waterproofing job for cracks created during service.
Injection resin, for example, when penetrating into cracks in the floor or walls, turns into a solid state, reliably waterproofing static cracks, that is, not subject to deformation.

But, often, cracks in concrete are formed in those places where periodic deformations of concrete occur.

For cracks in such places, a change in the width of their opening with time is characteristic.

They are called dynamic, and for their waterproofing an injection resin is used, which, after hitting the floor or walls, forms an elastic filling of the crack cavity, which makes it possible to provide waterproofing when the width of the crack opening changes.

If water flows from a crack, the cavity of which must be filled with injection material, then before applying the injection waterproofing, it is necessary to stop this leak.

To do this, injection into concrete is carried out in such a way as to get into the crack as close as possible to the outer side of the concrete structure.

In this case, an injection resin is used which is hydroactive, ie. which, upon contact with water, begins to increase very quickly in volume, filling the crack, thereby preventing the flow of water. After the water stops flowing, the cavity is filled with an injection resin, which creates a durable waterproofing of the cavity.

Injection resins, included in the line of materials for the PENETRON waterproofing system, are effective materials for creating waterproofing of cracks that have arisen during the operation of concrete structures by injection (injection) into concrete. You can buy injection waterproofing at Penetron-Moscow.

Materials for creating injection waterproofing
Material name	Description	Peculiarities		Cost, rub. (in view of VAT)
PENESPLITSIL	Two-component polyurethane resin for injection into dry and wet cracks, including mobile ones. Polymerization time - 40 min. Purpose: sealing of static and mobile cracks, cutoff of capillary rise of moisture.	Low viscosity, which allows sealing cracks with an opening width of 0.15 mm; High adhesion to concrete, metal and plastic; The reaction products of the resin are resistant to acids, alkalis and microorganisms.	Metal cans 19.2 kg + 22.8 kg	46 872,00
PENEPURFOM	A two-component, hydroactive polyurethane resin that foams on contact with water to form a waterproof foam. Purpose: stop pressure leaks through cracks. There are three types of material that differ in polymerization time: 1. PenePurFom N - 5 min. 2. PenePurFom HP - 3 min.	Low viscosity, due to which the material penetrates into cracks with an opening width of 0.15 mm; The possibility of sealing cracks and seams through which water is abundantly filtered; Possibility to choose the required type of material, depending on the intensity of water filtration.	Metal canisters 20 kg + 24 kg	36 212,00
	3. PenePurFom R - 1.5 min.			36 617,00
PENEPURFOM 65	One-component, hydroactive, injectable material based on polyurethane resins. Upon contact with water, it foams to form a waterproof rigid foam. Purpose: stop pressure leaks through static cracks in concrete, brick and stone structures.	The ability to control the polymerization time using a catalyst; The possibility of sealing cracks and seams through which water is abundantly filtered; Ability to effectively fill voids and compact the soil behind the structure, due to low viscosity and a large increase in resin volume (65 times).	metal canister	19 680,00

Material name	Description	Peculiarities		Cost, rub. (in view of VAT)
PENEPURFOM 1K	One-component, hydroactive, injectable material based on polyurethane resins. Upon contact with water, it foams to form a waterproof elastic foam. Purpose: stop pressure leaks through static and moving cracks; filling the cavity of expansion joints.	The ability to control the polymerization time using a catalyst; The possibility of sealing cracks and seams through which water is abundantly filtered; The ability to carry out effective sealing of moving cracks due to the elasticity of the material.	metal canister	17 820,00
Catalysts for one-component resins
	Catalyst PenePurFom 65 Catalyst - accelerator, significantly reducing the polymerization time of the polyurethane resin "PenePurFom 65"		Metal can 1 kg	2 070,00
	Catalyst PenePurFom 1K The catalyst is an accelerator that significantly reduces the polymerization time of the PenePurFom 1K polyurethane resin.		Metal can 1 kg	2 340,00
Equipment
	Manual piston pump EK-100M Designed for injection of polyurethane resins.			32 000,00
	Piston pump with electric drive EK-200 Designed for injection of polyurethane one- or two-component resins.			90 000,00
	Injector (packer) for piston pumps EK-100 and EK-200.

- this is one of the technologies for protecting the foundation, walls and supports of horizontal ceilings, which are below the ground level, from capillary moisture, groundwater and storm water. When moisture gets inside the building structure, its bearing capacity decreases, the reinforcement corrodes and collapses. The protrusion of moisture on the internal surfaces of the room leads to the creation of conditions for the formation of mold and colonies of microorganisms. The technology allows you to restore the water impermeability of any type of foundation if it is impossible or due to high repair costs by other means. For example, in case of violation or poor-quality external waterproofing of a multi-level existing parking lot, there is no other way to restore the insulation.

Technology of injection of waterproofing materials

When repairing, the injection of a sealing compound is performed at the site of localization of moisture protrusion from the inside of the foundation or room. At a distance of 0.25 ... 0.5 meters from each other, a series of holes with a diameter of 0.2 ... 0.35 mm is drilled at an angle of 45 °. The vertical distance between the rows is selected depending on the thickness of the foundation. A plastic, aluminum or steel packer is inserted into each hole, which seals the connection and serves as a fitting for connecting the composition supply pump. The mixture supply unit is designed to connect several packers and create pressure up to 0.5 MPa at each point. The exposure time under pressure is selected depending on the thickness and material of the foundation or wall and the penetrating ability of the insulating composition.

There are two ways to create injection waterproofing:

• The formation of a protective layer in the body of the slab or foundation masonry, for which holes are drilled to a depth of 2/3 of the wall thickness, packers are installed and the pump is connected. As a result, a volumetric region is formed, which is filled with an insulating compound through capillaries. The vertical and horizontal distance between the injection points should ensure the overlap of volumetric zones, which ensures the quality of work.
• Formation of a protective layer between the outer surface of the foundation and the soil. Holes for injection are drilled through. When the composition is injected, an insulating layer is formed that connects the soil layer with the outer surface of the wall or foundation. For this method, materials with a high ability to expand during polymerization or relatively cheap ones are used. their consumption can be large and poorly controlled.

Cracks close up. After it has set, holes are drilled and the expanding composition is pumped in. All work is carried out at an air temperature of at least 5 ° C.

Most of the materials used have a limited polymerization or curing time (15…30 min), which is used to determine the injection and holding time under pressure. The pressure at the beginning of the exposure begins to fall, because. the composition "diverges" through the capillaries and pores. The cessation of the pressure drop indicates the maximum possible filling of the voids and the beginning of the curing of the composition. At the end of the exposure, the holes are sealed with a sand-cement mixture based on expanding cement. Additionally, surface finishing is carried out by impregnating, coating or painting method.

Expendable materials

One and two-component polymer gels based on polyurethanes(e.g. MasterInject gel line or ). A feature of these mixtures is an increase in volume up to 20 times during polymerization. When mixing the components, the composition acquires high fluidity (density 1.03 g / cm³) and fills voids well. One-component sealants have a higher density (1.1 g/cm³) and are recommended for filling crack and joint cavities. Polymerization occurs upon contact with moisture, which allows the use of gels in humid conditions.

Acrylate gels and solutions based on acrylic acid(eg, or). Gels have good fluidity and adhesion. The rate of polymerization depends on the presence of additives (accelerators or retarders). Polymerization occurs due to a chemical reaction with the formation of solid bound crystals. The use of gels based on acrylates allows you to strengthen the material and seams of the masonry or the body of a monolithic foundation. When mixed with soil that touches the outer surface, the composition forms a waterproof monolith of soil and wall.

Compositions based on silicon and its compounds(e.g. ). Aqueous emulsions of silicon compounds, when dried, form a durable waterproof film. Based on silanes and siloxanes, a concentrated silicone microemulsion is produced, which has good adhesion to all building materials. For injections, they are used to a limited extent, because. do not form a strong filling mass in the cavities.

Epoxy based compounds(for example, or) have a relatively high density (1.1 ... 1.5 g / cm³) and polymerize upon contact with atmospheric air, which limits their scope to the insulation of horizontal ceilings in a dry room and filling cracks or voids. At a relatively low cost, the use of epoxy resins can significantly increase the strength of the connection between the horizontal and vertical components of the structure.

Microcements(for example , ). The sizes of microcement particles do not exceed 1…2 mm. Used to fill cracks or voids in masonry or monolith. Waterproofing properties depend on the brand and amount of cement in the mixture.

Buildings made of concrete and brick are durable, stable, able to withstand strong mechanical loads and temperature changes. But joints remain between the plates, groundwater penetrates into the expansion joints, and any crack in the wall can become a source of leakage. Waterproofing a concrete foundation, masonry or brickwork helps prevent a “flood”. With its help, you can eliminate existing leaks and, by closing the cracks in the plates, prevent the appearance of new ones.

Waterproofing by injection involves restoring the integrity of the system with a hydrophobic material. During the work, a polymer injection is made: a substance is pumped under pressure into the destroyed structure. Varmastroy uses powerful pumps that are safe for concrete slabs and bricks. The advantage of the method is the absence of the need to dismantle structures for the sake of injection.

Varmastroy performs injection restoration of:

• working (cold) seams;
• expansion joints;
• microdefects and cracks;
• inputs of engineering communications;
• attachment nodes.

The contractor offers a cut-off insulation device. All work is carried out using modern European sealants.

Cold seams

It is technologically impossible to pour all concrete structures at the same time. Molecular tension arises between the old, already frozen, and the new layer. Sooner or later, water begins to seep through the working seam. The liquid destroys the concrete slab and the reinforcement inside. As a result, the strength of the entire structure is reduced.

Defect locations:

• flat or ribbed floors;
• foundation;
• columns;
• beams.

Insulation installation procedure:

• Workers shtrobyat a cold seam.
• It is cleaned of dust and minted with a repair mixture.
• Holes are drilled for the injection mixture.
• Install packers.
• The defect is sealed with polyurethane foam, then with polyurethane resin.
• Remove packers.
• Grind the problem area with a diamond tool.
• Coat the sealing surface with sealant.

expansion joints

The sections provided by the building technology divide the building into "autonomous" blocks. This separation allows you to level the load on the supporting structures, to prevent critical deformation of the building.

Water flowing down can accumulate in the hollow space, and ground flows can penetrate through the cracks. Over time, the recess cracks, ceases to hold liquid.

Insulation installation procedure:

• Workers remove the old joint filler.
• Lay new sealant in layers.
• Caulk the cavity with a repair mixture.
• Drill holes at an angle to the longitudinal line.
• Install packers.
• The acrylate gel is pumped under pressure.
• Remove packers.
• Seal the holes with a hydrophobic compound.
• An epoxy-based tape is glued on top.

cracks

Micro-tears in cement or brick quickly develop into gaps, voids or gaps. High humidity only speeds up the process. Cracks are formed due to improper design of the building, excessive loads, seismic shifts, redistribution of the weight of the upper floors.

The causes of non-constructive defects are the general shrinkage of the structure, strong temperature drops, and the destruction of internal reinforcement. Such gaps do not affect the mechanical strength, but serve as sources of water flows.

Insulation installation procedure:

• 1. Workers are chasing a crack.
• 2. Clean the insulated surface, caulk it with a repair mixture.
• 3. Drill holes at an angle to the main line.
• 4. Set the packers.
• 5. Under pressure, polyurethane foam is fed into the fracture.
• 6. After curing, the polyurethane resin is pumped in.
• 7. Remove the packers.
• 8. The areas adjacent to the defect are ground with diamond equipment.
• 9. Coat the surface with a sealant.

Communication inputs

Water, electric cables, natural gas are supplied to the building through pipes. Holes are made in the walls of the building, into which steel sleeves are inserted. Sewage and groundwater seep through leaky gaps. They stagnate indoors, provoke further destruction of concrete. Prices are per m2.

Insulation installation procedure:

• 1. Workers embroider the junction knot.
• 2. Close up the space between the wall and the pipe with a polymer sealant.
• 3. Caulk the junction with a repair mixture.
• 4. Drill holes around the input.
• 5. Set the packers.
• 6. Under pressure, an insulating composition is introduced - an acrylate gel.
• 7. Remove the packers.
• 8. Seal the holes with a repair compound.
• 9. Coat the place of work with a hydrophobic substance.

Junction nodes

Water also penetrates through the joints between:

• - walls and horizontal slabs;
• - columns and floor or ceiling;
• - openings or arches and ceilings.

Water accumulates in the cracks, further accelerating the destruction. To prevent collapse, microdefects must be sealed. The price of works is considered per m.

Insulation installation procedure:

• 1. Workers embroider the joint.
• 2. Mint it with a building mixture.
• 3. Arrange a fillet.
• 4. Drill holes on both sides of the main line.
• 5. Set the packers.
• 6. Seal the assembly first with polyurethane foam, then with polyurethane resin.
• 7. Remove the packers.
• 8. Close up the holes.
• 9. Grind the surface and coat it with sealant.

Cut-off waterproofing

In the foundation, moisture accumulates under the influence of groundwater. It penetrates inside, leads to the rapid destruction of concrete, the spread of fungus, microorganisms.

Insulation installation procedure:

1. Workers drill holes around the perimeter, at a distance of 100-120 millimeters. The angle is selected depending on the foundation.
2. Clean the surface from dust.
3. Install packers.
4. Under pressure, the injection composition is fed inside.
5. Remove packers.
6. Seal the holes with a hydrophobic substance.

The following types of polymer injection compounds are used in construction for injection of concrete, cracks, brickwork, and waterproofing cut-offs:

Polyurethane resins (PUR):

• for elastic sealing and filling of dry, wet and water-saturated cracks, seams and joints in above-ground, underground and engineering structures, including drinking water structures
• to create a cut-off waterproofing from raising capillary moisture along brick and stone walls.
• for injection of concrete into injection hoses laid before its laying in the structure, designed to seal working joints in reinforced concrete structures.

• Hydroactive polyurethane resins (foams) are used when there is a large influx of water into the structure, to eliminate filtration and infiltration of water under significant pressure.

Resins (gels) based on acrylate (A):

• for additional external sealing of building structures buried in the ground (waterproofing cut-off), by injecting the gel along the border of the soil-building structure.

• for sealing and sealing injection of cracks and voids in masonry and concrete
• for elastic sealing and filling of wet micro-cracks in concrete and masonry structures
• to create a waterproofing cut-off from raising capillary moisture along brick and stone walls
• for soil consolidation

The construction process necessarily provides for the waterproofing of the foundation and walls. Much attention has been paid to this stage in the last few decades. There are many ways to protect a house from moisture ingress, and one of them - injection waterproofing - we will consider in this article.

Why do you need foundation waterproofing?

Few people know that concrete itself is not afraid of moisture, it only becomes stronger from it. But concrete is not a water repellent and perfectly passes water through itself. Therefore, waterproofing should not be neglected. You can do without it only during the construction of non-residential premises, and then if the groundwater level is low.

Indoor waterproofing methods

Usually, waterproofing of foundations and walls is carried out from the outside of the room. But in some cases it is impossible or impractical to do this. For example, it is not always possible to dig in the foundation of an already operated building. In this case, waterproofing work is performed in the basement.

There are several ways to waterproof the interior walls of a room. The most common:

• impregnating
• coating
• painting
• injection

Impregnation waterproofing of the foundation and basement walls is carried out relatively quickly. The material for its device is a mixture, which includes a special type of cement, sand and special additives that give the mixture waterproofing properties. The components of the composition applied to a wet surface react with water. As a result, crystals are formed that stop the penetration of moisture. And the wetter the surface of the walls, the stronger the effect of the mixture.

Coating and painting methods are similar. For them, bitumen-polymer or bituminous mastics, polymer paints or oil paints and varnishes are used. This type of insulation is quite effective in basements, but the compounds used for waterproofing are very toxic. The minimum thickness of the coating insulation layer is 3 mm, the paint insulation layer is 1-2 mm.

The injection method is the most expensive, but with its help the greatest efficiency is achieved. Most often, the material is acrylate mixtures and gels. The barrier obtained as a result of injections can withstand water pressure of several tens of atmospheres. This method is used not only for waterproofing foundations and walls, but also in subway tunnels.

The essence of the injection waterproofing method

This method of protecting foundations and basement walls from moisture and leaks has been used in Europe for over 30 years. In our country, it became known relatively recently and is considered promising. The cost of materials and labor is slightly higher than the cost of more traditional waterproofing methods, but the effect of the work performed is several times higher. Using the injection method, even cracks and chips on the surface of walls and foundations can be repaired, and active water leakage through concrete can be stopped. It can be used not only for concrete surfaces, but also for porous materials, such as brickwork.

The peculiarity of this method is that the prepared polymer mixtures are pumped under pressure into the pores, seams and cracks of the walls, floor and ceiling of the structure. In hard-to-reach places, special types of injectors are used, with the help of which the mixture is pumped under high pressure.

The materials used for injection insulation are made on a mineral or polyurethane basis. Their density is approximately equal to the density of water, which allows them to penetrate almost unhindered even into subtle cracks that could form in the walls of the foundation.

The use of an injection method of waterproofing is advisable in the following cases:

• it is necessary to increase the limit of working loads of bearing structures of foundations made of bricks and rubble;
• if necessary, eliminate active leaks in the walls of foundations;
• when installing cut-off insulation between the foundation and the main wall of the house;
• when sealing joints between the soil and the foundation wall.

Injection waterproofing device technology

Work on the isolation device begins with the preparatory stage. In new buildings, it consists in cleaning the surface of the walls from dust and dirt, as well as eliminating irregularities. In the case of repairing already operated surfaces, the scope of work is slightly larger. It is necessary, if possible, to remove the old waterproofing, clean the walls from fungus and mold, remove salts using special tools.

The next stage is drawing up a project, which indicates the density of future holes, and the amount of waterproofing mixture that is needed to complete the entire amount of work. The number of required holes and material depends on the thickness of the foundation and the type of mixture. The consumption of the mixture based on polyurethane per square meter is not less than 1.5 liters. The required amount of acrylic-based material is much less.

A hammer drill or drill is used to drill holes. The diameter of the holes should be 25-32 mm, it depends on the diameter of the injection packers or capsules. Holes are made under a sharp cut up to 45 degrees. Depending on the tasks, the depth of the holes can vary, usually it reaches 2/3 of the wall thickness. When sealing the seams between the ground and the foundation, it is necessary to drill through the wall through. The holes are washed with a stream of water.

Packers are inserted into the resulting holes, which serve as nozzles for the pump. Through these nozzles, the finished waterproofing mass will be pumped into the wall. For this process, a small pump is sufficient, which creates a pressure of 0.5 MPa. For critical units of industrial facilities, an electric diaphragm or piston pump is used. With the help of such equipment, the mixture is fed into the holes along with the hardener, which makes it possible to evenly distribute the waterproofing material throughout the entire thickness of the wall.

If the wall is made of "dry masonry" you can do without a pump. But in this case, the packers will need to be filled several times a day. Without a pump, the mixture diverges more slowly through the void in the concrete and the process should be repeated several times.

After completion of the injection work, all drilled holes are sealed with a conventional cement-sand mixture.

Important! Work should be carried out at an ambient temperature of +5 degrees. At lower temperatures, the spread of the mixture over the concrete will be very difficult.

Every year the development of human civilization is moving in a progressive direction, and this development in various areas of human activity is progressing exponentially. This applies to such sectors of the economy as energy, industrial and housing construction, transport and special construction, etc.

The vast majority of objects under construction have buried part or completely underground. In this regard, the relevance of reliable waterproofing is becoming increasingly relevant.
However, it is not a secret for anyone that in practice it is almost impossible to meet an object where its protection against moisture would be made without defects. There are many reasons for this - these are errors in the project and the quality of construction, and of course, unreasonable savings, especially in the use of injection waterproofing technologies. As a result, what was considered secondary at the construction stage, comes to the fore at the stage of commissioning the facility and its operation.

This situation Today it is very typical, which causes enormous damage to our economy, leads to a delay in the commissioning of facilities, a decrease in overhaul periods, their service life, an increase in operating costs and can lead to emergency situations and even to the impossibility of operation and leads to an increase in lost profits .

Most often, in buried and hydrotechnical facilities for various purposes, leaks occur through working and expansion joints, junctions and interfaces of structural elements, utility inlets, formwork attachment points, etc.

Effective fight against such leaks- namely, with the help of injection waterproofing, the main specialization of our company INJECT LLC, which was created in 2007 in partnership with our German colleagues and partners Minova CarboTech GmbH specifically to meet the challenges of the most advanced and efficient method of sealing leaks and waterproofing.

The video shows: Educational film. Practical training in injection waterproofing for the injection of acrylate gels. Taken in Samara (Russia) metro station Moskovskaya (2008). Training is conducted by Heinrich Arnold (Germany).

With strong technical support of our German colleagues, already in 2008 managed to win a significant position in the market of waterproofing services (injection waterproofing) because the demand for such services, due to its effectiveness, did not decrease even during the crisis of 2007-2009! On which the period of formation of the company fell.

The point is that the method injection waterproofing, despite its "high cost", it often turned out to be very effective and reliable in comparison with more "cheap" technologies, and most importantly, it solved several problems at once.

Today, in contrast to the "zero", when in Russia the technology of injection waterproofing appeared no one needs to prove its effectiveness. So how does injection waterproofing, this technology compares favorably with other waterproofing methods, and why has it gained so many fans so quickly?

See what it allows:

• Allows you to arrange or restore external waterproofing from the inside. That is, without external excavations.
• Allows you to repair and stop the water inflow locally, preventing water from entering the structure.
• In most cases, injection waterproofing is repairable.
• Allows you to heal cracks and restore the bearing capacity of the structure in its thickness.
• Allows you to create volumetric waterproofing, to deal with loosening, while increasing the bearing capacity of the structure.
• Allows you to restore the performance of expansion joints located in hard-to-reach places, etc.

Today it's hard to imagine, how a few years ago we did without this "lifesaver". Injection waterproofing has found its consumers as private traders during construction:

• foundations,
• basements
• pools,

and in residential and industrial construction, as well as the operation of objects for various purposes. These objects include:

• Moskollektor,
• Moscow subway,
• Moscow Metrostroy,
• Gormost,
• Vodokanal,
• other hydraulic structures,
• HPP, Railway and car tunnels,
• pools,
• underground parking lots, etc.

For ten years of existence of LLC Inzhekt, with our materials and with our participation, many iconic objects were completed throughout the country, which unequivocally confirms the fact that injection waterproofing allows you to successfully deal with leaks, including pressure ones, and its use is absolutely justified.

If done market overview of products used as injectables, then the first place in terms of volume (but not in importance) occupied by polyurethane resins. Not infrequently, hydroactive polyurethane resins are used for this purpose, foaming on contact with water and, expanding, they clog cavities, providing temporary waterproofing. Along with the undeniable advantages of these resins they have a significant disadvantage- not long service life.

As a rule, after a year, and sometimes even earlier, leaks form again in the repaired areas. The fact is that in most cases we use one-component polyurethane to localize leaks. The catalyst (accelerator) often mistaken for the second component is not.

The second component for them is water, without which the polymerization of "one-component" resins is not possible. Such polyurethane resins are intended only for temporary stoppage of leaks and are completely unsuitable for long-term waterproofing.

Another common mistake the use in construction of injection materials intended for other tasks, for example, intended for use in the mining industry, is considered! It should be borne in mind that in mining, other requirements are imposed on materials and other priorities are set.
So, as in construction, such high requirements for the quality of waterproofing, as well as increased requirements for the physical and mechanical properties of resins, are not set. It is no secret that the properties of polyurethane depend on the coefficient of foaming, which is strictly limited in resins intended for construction in order to obtain a denser structure. For the same reason, injection materials for construction have a significantly different pore structure, which leads to longer service life.

In order to provide the tasks necessary specifically for the construction industry, special, more expensive raw materials are used, in addition, the use of phenols is prohibited in injection materials used in construction.

"Low" price of building injection materials should alert consumers.
Another important group of injection materials for injection waterproofing are acrylate (polyacrylate, methacrylate gels). They are indispensable for the construction of expansion joints and cut-off waterproofing.
World experience and our practice over the past 10 years has shown significant advantages of injection waterproofing and injection technologies, which are most often used in the most hopeless cases.
OOO Inzhekt is one of the informal leaders in the field production and use of injection waterproofing materials in Russia. Consumers have already been able to evaluate our materials and technologies at such facilities as:

• Moscow subway,
• Government House ("White House"),
• building of the President's office on Myasnitskaya street,
• Musical College named after the Gnesenykh
• the building of the tennis development fund in Russia,
• new Olympic swimming pool on the Leningrad highway,
• Zagorsk HPSP-2,
• Balakovo HPP,
• Saratov HPP,
• road tunnel No. 2 and railway tunnels No. 3 and 5 in Sochi, etc.

Over the years, we have supplied hundreds of tons of our products to various facilities in Russia. The most well-known products for injection waterproofing include such brands as HansaCryl and Proflex.