Composition of liquid waterproofing for concrete
Artificial stone made from cement composite is known for its high strength and durability. However, the material has a weak point - moisture. The structure of concrete is porous and cracks appear over time. These places are filled with moisture, which destroys the connecting chains between the components. And seasonal temperature changes cause an increase in voids.
The best solution to the unwanted effects of water exposure is concrete penetrating waterproofing. Rolled and coating materials create a separate barrier that fails, among other things, from mechanical loads from the outside. Means capable of penetrating the structure of the monolith become part of it. Thus, the durability of protection is calculated over a noticeably longer period of time.
Waterproofing Penetron Source 2gis.com
In addition to the beneficial properties of the hydrobarrier, the advantages include the composition of the material. Its basic component is Portland cement. This point is important, since compositions identical in binder are characterized by good compatibility and high adhesion. Mechanical resistance is provided by quartz filler, and active chemical additives are responsible for the rest. In Russia, a single standard was approved for the production of protective equipment in 2015: GOST R 56703.
What is the procedure for waterproofing cracks, joints and seams?
Interfaces, joints, places where communications enter, as well as cracks, joints and seams are areas where Penetron penetrating waterproofing is most effective.
The pre-prepared fine must be moistened and then primed with one layer of a chemical mixture.
The consumption of dry material is 100 grams per linear meter of recess, with its size 20X20 mm.
Two hours after using the Penetron solution, the hole is filled with Penecrit.
Note! The maximum permissible layer thickness, in the case of Penecrit, applied at a time, should be less than 30 mm.
When the depth of the fine exceeds the permissible layer thickness, the finished mixture is filled with clean crushed stone, no more than 10 mm fraction (maximum 50% of the total volume), or is applied in several stages.
Not earlier than two hours later, the hole filled with Penecrit, as well as the area around it, is moistened, after which it is treated with two layers of Penetron. You should also not delay the subsequent procedure; the maximum allowable break time between processes is 6 hours.
Technical description of the material
The choice of protective composition is made based on the possibility of waterproofing concrete on the street and inside the building under various operating conditions. As a rule, the decision is made in favor of universal products with a long shelf life and simple installation technology. Let's consider whether the remedy for Penetron meets these and other requirements.
Internal protection of the monolith Source sdelai-lestnicu.ru
Properties of dry waterproofing for concrete
Penetron protective agents are sold in the form of a dry mixture, which is convenient for transportation and storage. The working mass is prepared in the traditional way: water is added to the mixture according to the instructions, the mass is brought to a homogeneous state using a construction mixer (drill with an attachment) for two minutes. It's simple and fast - another positive point. The main thing here is to develop the composition within half an hour. Waterproofing of concrete surfaces is carried out in a way convenient for the worker: with a brush, roller, spatula, or by spraying.
Spraying a protective composition Source ppu-complex.ru
See also: Catalog of companies that specialize in finishing materials and related work
Let's consider the properties of materials on the basis of which users highlight advantages:
- strength, durability and resistance to various operating conditions characteristic of cement;
- penetration can reach a depth of 90-110 cm;
- the ability to fill and provoke self-filling of microcracks up to 0.4-0.5 mm wide upon contact with moisture.
It is also worth noting two important points. Waterproofing Penetron only affects the absorbency of the monolith. In this case, the water resistance of concrete increases by at least 3 points to the limit value of W20. Otherwise, the properties of artificial stone after treatment with the composition remain unchanged.
Regarding the shortcomings, experts only pay attention to the consumption of Penetron per 1 m2 in two layers and the cost. However, taking into account the lifespan of the material compared to roll, slab and coating analogues, it can significantly save money on protecting the monolith. Here the indicator reaches 100 years or more, by analogy with concrete. That is, the treatment can be carried out once for the entire period of operation of concrete structures.
Failure of roll waterproofing Source roofs.club
Operating principle of penetrating waterproofing for concrete Penetron
Penetrating waterproofing for concrete actively interacts with the surface thanks to additives. They enter into a chemical reaction with cement stone, forming new crystalline bonds. As a result, the resistance of the base to acids, alkalis, salts, and water increases.
Delving into the principle of operation of the material, it is worth noting the rule of applying deep penetration waterproofing for concrete to a moistened base. This ensures the high chemical potential of Penetron and keeps the monolith low. As a result, due to osmotic pressure, the values are equalized, and the protective agent is absorbed into the concrete. The process is more effective, the wetter the surface of the artificial stone.
Penetron consumption per 1 m2
The consumption of Penetron waterproofing per 1 m2 is considered when applied in 2 layers. This is justified by the mandatory treatment of the concrete surface in two passes. The first allows you to prime and activate the composite, and the second provides reliable protection. In this case, it is unacceptable for the preliminary layer to dry out, since penetration occurs in humid conditions.
Treatment of concrete with Penetron Source mirvannaja.ru
The preparation of the working solution is carried out in strict accordance with the instructions on the packaging. If you also follow all the rules for work, then the consumption of Penetron waterproofing per 1 m2 is on average 1 kg of dry mixture. This is a convenient indicator for calculations.
How to apply decorative coating
The surface that has been treated with Penetron can subsequently be covered with finishing or painting materials only after 28 days. The holding time can be reduced or increased depending on the requirements for a particular finishing material in relation to the moisture content of the concrete.
Before you apply a decorative coating to the surface after treating it with Penetron, it is cleaned mechanically . This improves subsequent adhesion (adhesion).
This is done using water jet when the materials are applied to wet concrete or using a metal brush when the materials are applied to a dry surface.
When working with Penetron, you must follow a number of safety rules according to the instructions, since this product contains Portland cement, which negatively affects the skin and eyes :
- Before starting work, wear rubber gloves and safety glasses.
- Avoid getting the product on your hands or eyes.
- If contact does occur, you need to wash everything with water.
Now you know how to properly use Penetron Admix for surface treatment and what you need to consider when doing this work. The advantages of this composition are obvious if you use it according to the instructions.
Other waterproofing materials for concrete from Penetron
Concrete waterproofing compound is not the only product that can be useful for cementitious composites. The manufacturer offers a whole line of products. The description is presented in the table below.
Penecrit | Designed to prevent drip leaks and moisture penetration through micropores. Water resistance – W14, consumption – 1.5 kg/l.m. Fills seams up to 25 mm wide and 40-50 mm deep. If the value is higher, it is allowed to add gravel or crushed stone to a 50/50 ratio. Sold dry. The recommended portion of the batch is 7-8 kg. |
Peneplug. | Relevant for immediate repair of areas with leaks under pressure. Work in conditions of direct contact with water is acceptable. The working time of the sealant is limited to 30 minutes. Water resistance – W16, consumption – 1.9 kg/m3. dm. |
Waterplug | It is identical in functionality to Penoplug, but takes longer to set. Waterproof W14, consumption 1.9 kg/cu.m. dm. It is made on the basis of aluminate cement. |
Admix | It is used as a functional liquid additive to the solution at the stage of its preparation. Helps improve the resistance of concrete to changes in humidity and temperature, increases the permeability of dry residue by 3 positions. The composition is prepared with water in proportions 1.5/1, the content in the composite is 1%. |
Penebar | Suitable for sealing seams, joints of adjacent structures and utilities with concrete. It has the property of increasing in volume up to 300% upon contact with water. Sold as an elastic band/gasket with a rectangular cross-section. In cold weather, flexibility is maintained. |
As a rule, the listed compositions are used in combination with Penetron. This is explained by obtaining the highest quality result. The exception is Admix, since additional waterproofing is rarely necessary.
Properties
It is used to ensure water resistance of monolithic and prefabricated concrete and reinforced concrete structures that have pores and cracks with an opening width of up to 0.4 mm.
- Protects concrete from freezing and chemically aggressive substances.
- Increases the water resistance of concrete to W18. Concrete saturated with the Penetron Admix additive does not allow water to pass through even when exposed to lifting pressure.
- At the same time, the vapor-permeable qualities of concrete are preserved.
- Does not change the structure of concrete. Admix is allowed to be used in conjunction with other concrete additives.
- Saves money and time spent on waterproofing.
- In combination with a composite strand for working joints Penebar, it makes concrete completely invulnerable to water.
- Compatible with other additives used in concrete production and concreting (plasticizing, anti-frost, etc.).
- The material is environmentally friendly and radioactively safe.
- Approved for use in domestic and drinking water supply. Certified for use in construction.
Briefly about the main thing
Penetron is a deep penetration waterproofing mixture with a service life of 75-100 years.
The effectiveness of the solution reaches 90-110 cm, minimum 30-40 cm.
The main components are Portland cement, fine-grained quartz sand and active additives.
Along with Penetron, the manufacturer’s line includes a water repellent for solution, a sealant and a filler for gaps with cracks, including instant setting.
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Advantages and disadvantages
Deep penetration waterproofing materials of the Penetron brand have such basic advantages that are not available to other types of surface waterproofing.
- The material is suitable for application on any side of the structure - external or internal.
- The method of applying the insulating material makes it possible to uniformly cover the entire treated area without chips or cracks.
- The age of the concrete structure does not affect the quality of the final waterproofing results. The material adheres equally well to freshly prepared surfaces and to concrete that has already been in use for some time.
- The working layer of waterproofing does not require the application of any additional protective layers of other materials on top of it.
- Deep penetration waterproofing protection is able to withstand sudden temperature changes in the plus and minus ranges, and is also resistant to chemical and mechanical actions.
- The material is quite easy to apply manually or using a sprayer, and it is safe for humans and the surrounding ecological environment.
- Reinforced concrete is often used in building structures; deep waterproofing extends the service life of the metal frame by at least three times.
- Penetrating waterproofing can be applied to plaster made from a cement-sand mixture. But finishing work and painting after applying Penetron brand insulating material is best done after at least 28 days.
Reviews about the use of penetrating waterproofing brand "Penetron" are generally positive.
However, there is a list of surfaces for which the use of this product is inappropriate:
- foam concrete and aerated concrete surfaces;
- expanded clay concrete materials;
- foam-magnesite and gas-magnesite materials;
- foam-gypsum, gypsum and gas-gypsum surfaces;
- shungizite concrete and slate ash concrete materials;
- expanded polystyrene concrete products;
- asbestos cement materials.
For such cases, it is more economical to use coating types of sealants. In addition to the listed surfaces, experts do not recommend applying deep penetration materials to surfaces that are subject to vibration loads - in this case, the waterproofing layer will crack and will not fulfill its protective function. For example, supports of bridges or vehicle viaducts are subject to this influence.