Concrete surface injection technology

The use of concrete surface injection technology in building and maintenance has revolutionized the industry. Concrete structures can be strengthened and restored using this cutting-edge technique without requiring extensive demolition or replacement. We can solve problems like voids, cracks, and water infiltration by injecting specific materials into the concrete, guaranteeing the longevity and durability of the building.

This technology’s capacity to swiftly and effectively repair concrete is one of its main advantages. Surface injection offers a more efficient and minimally invasive procedure than traditional methods, which frequently cause substantial disruption and financial burden. Buildings and infrastructure will have less downtime as a result, enabling them to continue operating while repairs are made.

The materials’ versatility in concrete surface injection is another benefit. Several kinds of grouts or resins can be injected to produce the required effects, depending on the project’s particular requirements. There is a solution for everything from reinforcing a weakened structure to sealing cracks to stop water damage.

This technology has applications not only in residential settings but also in large-scale infrastructure projects. Surface injection is a tool that homeowners can use to fix problems with driveways, foundations, and other concrete components, keeping their homes stable and safe. More and more people are turning to concrete surface injection as a dependable fix for their repair needs as a result of this method’s rising popularity.

Which parts can be injected?

The issue of waterproofing a tunnel or basement can be resolved with the use of injection into concrete. This is particularly true when buildings made of concrete leak. The application of acrylate gels will work in this situation. The technique works on walls as well as floor coverings.

The restoration of a foundation, which was built using "cold joints," is the next area in which the technology will be applied. Water resistance may be lost if there is debris between the adjacent parts that can affect adhesion.

Furthermore, the method can be used in locations where joint deformation occurs. This usually has to do with parking lots and subways.

This technique can also be used to repair block foundations, which provide the structure strength and waterproofing qualities. Any portion of a reinforced concrete or concrete structure can have cracks filled, even the smallest, nearly invisible ones, with ease by injecting material into the affected area.

Among the method’s primary benefits are:

• preserves the integrity of the structural design;
• instantly waterproofs and seals;
• minimum time is spent on work;
• the method helps to restore and strengthen even the most inaccessible areas of the building;
• work can be done all year round, regardless of weather conditions;
• excludes excavation work;
• the ability to work in any plane – foundation, walls, ceiling, floor, etc.

Materials for injection

Various technologies are employed to fill in the cracks, including:

• epoxy resins;
• polymer cement compositions;
• polyurethane.

The primary prerequisites for solutions are that they should have a low viscosity, effectively fill the crack, and not change color in response to ambient temperature. Furthermore, the compositions need to fulfill the subsequent primary prerequisites:

• shrink minimally during hardening;
• have good adhesion to various materials, incl.. to metal;
• do not age;
• be resistant to corrosion.

Selecting your injection materials in advance will enable you to stock up on the tools you’ll need.

Epoxy resins

They are used to seal cracks in different types of concrete bases, particularly those that need to be as strong as possible. Resins can quickly pass through fissures as small as half a millimeter in thickness. It ensures the highest filling density possible. Concrete structures will regain their structural strength and bearing capacity following repairs.

Use of polycement compounds

When there is significant damage, it is best to use them rather than epoxy resin, which is costly and illogical in this situation. Concrete buildings made of Portland cement materials have higher densities and stronger designs (both new and old).

A unique cement mortar is injected under high pressure, enabling the composition to enter all pores and cavities—even ones that are hidden. When it comes to restoring foundations where building shrinkage has caused cracks to appear, this injection method is employed.

Waterproofing compounds

The structure is shielded from potential moisture intrusion by polyurethane. This substance works really well as a waterproofing agent. It is used to isolate holes and cracks in water supply and sewerage networks, treat particularly damp areas, and fill seams and joints between monolithic parts.

Step by step injection

Packers and pumps are among the tools used in the operation to inject concrete. The technology is separated into multiple significant phases:

1. Preparatory (the surface is prepared for the process).
2. Filling cracks.
3. Applying the final layer.

Prepare the surface

It states in the work instructions that the concrete structure’s surface must be properly prepared before applying the sealing resin. Among the preparations are:

1. Drilling a hole. This must be done along the crack, using a hammer drill. The holes must be staggered, directed towards the defects, and deep enough to reach the cavity and void in the monolith.
2. Inserting the packer into the holes. These are special tubes through which the injection equipment is connected. The mixture will be supplied through these tubes. It is very important to correctly place the packers and tubes. Only with a correctly installed packer will the composition be correctly distributed, fill the void, and restore the integrity of the structure.

The material’s viscosity influences the supplied composition’s pressure!

Overcoming the composition can worsen the situation by causing the cracks to widen and the monolithic structure’s strength to be broken.

Filling the voids in the cracks

The simplest method for handling flaws smaller than half a millimeter. The absence of corrosion on the structure is an additional requirement. This will guarantee both the output’s speed and quality even when a manual injector is employed. If corrosion is found, the concrete slab is delaminating; a grinding machine can be used to clean the surface. The solution won’t harden properly and the cracks will only get worse if the flaws are not fixed.

Filling patterns (which vary based on the precise location of the crack):

1. Vertical. Inject from the lower points, finish – at the top.
2. Horizontal. You can inject from both sides at once, from the central point to the outer ones or from left to right.
3. Ceiling. The work is similar to the previous one, the resin will not flow out of the holes, because it is viscous.

Apply the last layer

After the pouring is complete, remove the tubes and use the special plugs to seal the packers. The area that has been restored needs to be sealed with a film; it cannot be taken off until the composition has fully set, which could take several days to a week.

The insulating or decorative layer is applied after the film is removed; this will conceal any signs of the repair.

The subtleties of waterproofing work

There should be two stages to the work if waterproofing the object is your goal:

1. First, roll polyurethane into cracks – it will block access to moisture, forming a porous structure.
2. Serve epoxy resin through packers when polyurethane froze – it will fill the void, polyurethane pores, so the structure will become strong and integral.

The price of the issue

The manufacturer, raw materials, and other elements all affect the cost of the materials. On the other hand, you can roughly count.

As a result, the packer costs 50 p. and the minimum retail price of 800 r. for a kilogram of resin (the larger the size, the more expensive). Each roll of protective tape will run you about 400 r (the exact amount will vary depending on the width and length). Consequently, injection technologies have a minimum cost of 1250 rubles.

The way that structural weaknesses and cracks in concrete surfaces are addressed has been completely transformed by concrete surface injection technology. Concrete can be reinforced and repaired using this technique without requiring significant demolition or replacement. Concrete structures can have their integrity restored and their lifespan and performance improved by directly injecting specialized materials into voids and cracks.

Because of its extreme adaptability, this technology can be used on a wide range of concrete structures, such as pavements, buildings, and bridges. Epoxy resins and polyurethane foams, among other materials used in the injection process, are made to form a strong bond with the existing concrete, resulting in a long-lasting and robust repair. Its minimal invasiveness and relative speed make it a desirable option for large-scale infrastructure projects as well as small-scale repairs.

Furthermore, compared to conventional repair techniques, concrete surface injection technology offers significant cost savings. Later repairs will be more costly and disruptive, so property owners and managers can avoid them by addressing problems early and stopping further deterioration. In addition to maintaining the structural integrity of concrete surfaces, this proactive approach enhances general dependability and safety.

In conclusion, concrete surface injection technology offers a reliable, strong, and economical way to repair and strengthen concrete structures. It is a vital tool in contemporary construction and maintenance procedures because of its capacity to fix cracks and weaknesses without causing significant disruption. This technology will surely become increasingly important as it develops to maintain the durability and robustness of our built environment.

The use of concrete surface injection technology is transforming the way that deteriorating infrastructure is strengthened and repaired. By injecting specialty resins into voids and cracks in concrete surfaces, this novel technique effectively seals and reinforces the material from the inside out. This procedure improves a structure’s resilience to environmental influences and durability in addition to extending its lifespan. Concrete surface injection technology is fast taking the lead as the most practical and least intrusive way to preserve and repair the integrity of buildings, bridges, and other concrete structures.

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