Waterproofing of the well from concrete rings: methods and materials. Repair of waterproofing well

The construction of a well is always accompanied by the protection and strengthening of the walls with waterproof materials. If the design is based on reinforced concrete rings, they will show reliability, durability and hygiene, because the material does not contribute to the emergence of bacteria. The system will protect the internal space from seepage of groundwater and surface water, but only if it is sufficiently protected. Therefore, during the construction phase, a waterproofing of the well from concrete rings must be carried out.

Necessity of work

Concrete is not destroyed by moisture. The main feature of this material is that it passes water well, if it has not been waterproofed. Because of this, the properties of the structure will be exposed to moisture, in contact with wet concrete, here you can include metal and wood. Rust will expand over the reinforcement, deforming it and making it less sturdy. This is the reason for the destruction of the entire structure.

To waterproof the well from concrete rings, it is necessary to exclude the ability of the material to absorb moisture. Reinforced concrete rings are subjected to such protection even at the production stage. Typically, suppliers use the following methods of waterproofing:

• Constructive;
• Technological;
• Use of waterproof cement.

The first method involves treating products with water-repellent substances after manufacturing. At the production stage, technological waterproofing is applied, here is the technology of compacting concrete, which is still in the forms. The material is subjected to centrifugation, vibrocompression and vacuum removal of excess moisture.

Moisture protection can also be provided by adding various water repellents to the concrete. These ingredients begin to work after hardening of concrete, swell and clog pores and microcracks. This provides the concrete with the ability to withstand the effects of moisture. These measures help to increase the cost of reinforced concrete rings, but if you decide to save on rings, it is important to seal the seams and joints between the structural elements. This will provide long-term protection from decay, corrosion, mold and fungus.

Materials for waterproofing

The waterproofing of the well from concrete rings may involve the use of one or more materials. Classify them can be for internal and external purposes. The latter option involves the use of a clay castle, but this method can not be called the only one. Internal insulation is the processing of the following types of materials:

• Injecting;
• Penetrating;
• Lubricating.

Before the waterproofing of the well from concrete rings, it is important to correctly determine the method of protection, which depends on the degree of mineralization of groundwater. Some technologies private developer can not choose, because they provide for the use of special equipment.

Methods of hydroprotection: injection waterproofing

Dimensions of concrete rings - this is not the only thing that is important to choose for the proper operation of the system. It is necessary to provide more and hydroprotection. Injection materials - this is the case when it is worth asking for help from specialists. Waterproofing of this kind is expensive, but it does not have to be done again, because the material is ready to serve exactly as much as the whole structure will be used.

Polymeric compounds are pumped into the material, clogging cracks and pores. The advantages of this method of moisture protection are:

• The possibility of using new structures for insulation;
• The possibility of repairing the waterproofing of the well;
• No need for surface preparation;
• The ability to eliminate flowing and pressure leaks.

However, such a waterproofing of the well from groundwater has some drawbacks, among them high costs and the need to use high-pressure pumping equipment.

Use of penetrating materials

This technique is an example of a unique principle when the force of water is used to protect against attacks. Particles of water repellents crystallize under the influence of water and clog pores. With increasing humidity, moisture protection becomes more reliable, because waterproofing hardens much faster. For carrying out such work, the following types of materials can be used:

• "Remstrim-T".
• "Infiltron-100".
• Penetron.
• Penecret.

Solid elastic coating materials

Use this solution is possible for waterproofing wells, basins and foundations. The application is carried out on the prepared substrate, and after the material is left until the time of drying. After that the waterproofing finds:

• elasticity;
• High tensile strength;
• Resistance to low temperatures.

The most popular solution on the domestic market is the Spanish product Tekmadriy Elast, which is a two-component coating. DuPont products also proved themselves, as well as the Italian Mapei. If you want to save, you should buy a Russian waterproofing "Rastro", which will cost less than foreign analogues. Waterproofing of the seams of the well can be performed with the help of sealant in the form of a tape, for example Rubber Elast.

Technology of waterproofing the well outside

When constructing a well, measures are usually taken for external waterproofing. If we are talking about the need to protect the old design, then we will have to carry out a fairly large amount of excavation. For this purpose, roll materials are used, for example, roofing material. However, penetrating protection can also be applied.

The surface should be prepared. The outer walls of the structure are maximally opened. Around the well for this, it is necessary to excavate the earth 4 m deep. The base is cleaned of dirt. If you have to work with the old design, then you can see some parts of the reinforcement, which had time to bark out during the operation. They should be cleaned and treated with an anticorrosive compound.

If the waterproofing of the well is being repaired, the walls must be covered with earth, you can use "Concrete contact" or bituminous-rubber composition, which have proven themselves, as well as cement-sand mortar, to which PVA glue is added. The composition is left to dry, and after it is applied bitumen or tar sand mastic. On its surface is pasted a ruberoid, the seams between the sheets should be smeared with mastic. When choosing a penetrating insulation, the step of priming the walls should be discarded. They are moistened and smeared with Penetron, leaving for three days to dry. The surface should be periodically moistened.

Internal waterproofing

The waterproofing of the well from the inside should be started after pumping out the water. It is important to ensure that the level does not rise until the work is completed. Internal surfaces are cleaned with a metal brush, it is important to remove dirt, moss and loose concrete. Slots and joints should be cleaned and deepened, only then you can start waterproofing measures.

If leaks have been discovered during this time, they can be sealed with Aquafix or with analogues of this substance. For the gaps, the Megacret-40 repair composition is excellent. Once the layers have dried, the walls of the well must be moistened and waterproofed with a wide brush. The technology assumes compliance with SNiP, the waterproofing of the well from concrete rings according to the rules is applied by the first layer on the moistened surface. The second layer should be applied without moistening. The day will go to freeze materials, at this time it is important to ensure that water does not rise.

In addition to the waterproofing with bituminous materials

Waterproofing of the well from concrete rings with bitumen mastic is carried out quite often. This technology is most suitable for outdoor protection. The surface is prepared, cleaned and covered with a primer, which will be able to provide a good degree of adhesion. For sewage and process facilities, it is possible to use a composition of three parts of gasoline and part of bitumen. In order to achieve high quality waterproofing, the seams should additionally be glued with a bentonite-rubber tape. In return, the CeresitCL 152 tape is sometimes used.

After drying, you can start repairing the rings, repair chips, cracks and potholes. To do this, use a cement slurry. The surface is then primed once again, smeared with tar mastic, because bitumen can crack, after you can begin to paste the roll waterproofing in 3 layers. It is recommended to treat all joints and joints with mastic and fill it with soil. Around the concrete well after sinking the soil it is better to make a blind.

Conclusion

Before starting work on the installation of sewage, you should familiarize yourself with the size of the concrete rings. For example, the diameter depends on the type of construction and can vary from 70 to 200 cm. As for the height, on average it is 50 cm. But the parameters of the rings are not the only thing to consider before installing the well. It is important to comply with SNiP 3.05.04-85, in which recommendations for waterproofing are prescribed.