“Lakhta” - penetrating waterproofing, which is a composition of quartz sand, cement and activating additives. The effect is achieved due to the fact that micro-voids and pores in concrete are filled with watertight joints. They form when active chemical components react with cement stone. In this case, water must be present.
Specifications
Lahti is a penetrating waterproofing that is water resistant within W10 or more. Corrosion resistance varies from 4 to 13 pH. It is impossible not to mention the high surface resistance to dark and light oil products. Use of structure for tanks with drinking water is allowed.
This mixture can be used in all climatic zones. Before starting work, it is necessary to make sure that the temperature of the surface to be treated has not dropped below +5 ° C. Ultraviolet has no effect on the material we are considering. “Lakhta” is a penetrating waterproofing that does not have a very high consumption: only 1 kg of the mixture will take 1 m 2 .
Benefit Reviews
Lakhta is used for waterproofing ground and underground structures. According to users, it is non-toxic, can be used on freshly poured and wet concrete, is easy to use, and also forms a single whole with concrete. It can be used on old and new concrete surfaces; it does not exfoliate and is not afraid of mechanical damage.
Users choose this composition also for the reason that it can be applied from the inside of the structure. Efficiency is achieved even with direct hydrostatic pressure. It is allowed to use the composition for surface treatment of structures in which drinking water will be stored during operation. Lakhta is penetrating waterproofing, which has some additional features. For example, consumers note that this composition does not have such a high cost as analogs, but in the work it manifests itself more efficiently than clay-panel, hydrolytic and membrane systems.
Usage Reviews
Consumers say that before applying Lahti, the surface of the concrete block or concrete must be prepared. The base must not be damaged, it should be freed from foreign substances such as petroleum products, dirt, dust, etc. This is because foreign substances can interfere with the penetration and formation of crystals.
If the surface is smooth, then it should be treated with sand under high pressure, then a hydrochloric acid solution is prepared, which is prepared in a ratio of 1 to 10. This will open the capillaries of the concrete.
Penetrating waterproofing "Lakhta", reviews of which are only positive, should be applied to the prepared surface. Processing should be subjected to the interface, which is equipped with a 2.5-centimeter gate. Visible cracks must be expanded to the same depth, their width should be 2 cm or more. Voids and cells are expanded into intact concrete. Users say that before applying Lahti, the base must be moistened.
For reference
In addition to the above, it can be noted that at the next stage a solution is prepared, during which it is necessary to act in accordance with the instructions, from it you can find out that you need to use equal parts of the dry mixture and water. The composition should be regularly mixed during application. Its volume for work should be such that the master can use it for 30 minutes.
Reviews on surface treatment features
Penetrating waterproofing for Lakhta concrete should be applied using spray equipment or a hard brush. Users argue that in dry climates, gentle wetting is required before the second coat is applied. If we are talking about horizontal surfaces, then the liquid solution should be applied in one layer, you can use a brush for this.
Consumers like that when working with plastic wet concrete, it is possible to apply Lahti by spraying the composition through a fine sieve. Then the treated surface is rubbed, and the coating is subject to wet drying. In this condition, the surface must be left for 3 days.
Cost
If you need Lakhta penetrating waterproofing, you can buy it in St. Petersburg at different prices. The final price will depend on the destination of the material. For example, penetrating waterproofing, which is used for reinforced concrete and concrete structures, can be purchased for 5200 rubles. This mixture can be used in reinforced concrete and concrete structures, as well as in rubble or brickwork. If we are talking about suture waterproofing, then a 25-kg package will cost the consumer 3,800 rubles. A mixture is used for waterproofing molding joints, cracks, seams, as well as communications inputs. You can use the composition for the interface in prefabricated and monolithic concrete and reinforced concrete structures.
After examining the reviews, we can conclude that among the similar products, Lakhta is very popular today. Penetrating waterproofing (you can buy it in Moscow in many construction stores) goes on sale in several variations.
For example, there is the so-called “Lakhta” water plug, which comes in a 5-kg package. It costs 1040 rubles. Used to eliminate leaks and filter water through holes and cracks.
Another variety is an additive to concrete. For a package weighing 20 kg you will have to pay 1900 rubles. This material is intended to produce solutions that will have increased water resistance, frost resistance, strength and corrosion resistance.
Sometimes in the work you need a repair base, which can be purchased for 1800 rubles. The material is used to restore the surfaces of brick, concrete, aerated concrete and reinforced concrete structures. This mixture is used to repair defects whose depth starts from 5 mm. The composition includes thixotropic, so it can be used on vertical surfaces.
Conclusion
Quite often, repair uses the Lakhta penetrating waterproofing. Yekaterinburg offers for sale many varieties of this material. For example, "Lahti: Quick Repair." The cost of 25 kg of the composition is 2200 rubles. The material can be used to restore potholes, chips and erosion. In a limited period of time, you can achieve waterproofing protection with high strength characteristics.