Starting repairs in the house or apartment, one of the mandatory work will be plastering walls. Often, the repair falls for the winter, so the owners need to know at what temperature you can plaster walls.
It will still be necessary to find out how to properly carry out work so that the solution does not crack or simply do not disappear. The article will contain all the rules and recommendations on temperature modes for work and the conditions for applying plaster.
Preparation and conditions
Full time to separate the walls with plaster in warm and dry season In the summer, the procedure for plastering walls inside the building is substantially simplified, since humidity is low, and the temperature allows you to quickly dry the solution and not deform.
In winter, it will be necessary to comply with certain rules.
First, moisture in the room where the repair is carried out should be no higher than 8%.
Secondly, the temperature of the scene itself should be no less than +8 degrees.
Watching the slopes on the openings, the corners of the building, you need to know that they are most of all cooled, so it is better to carry out work before the beginning of the winter period.
Necessary high temperatures in the room will lead to the wrong drying of the mixture and the appearance of defects If there are no windows and doors, then you need to insert. After that, insulation should be carried out. Working in a residential room, you need to remove old finishing materials, if necessary, remove some of the old plaster.
Additionally, it should be noted that we can put the walls in the winter period if the temperature is not less than +8 degrees, and not more than +30 degrees near the ceiling.
If there are more than 30 degrees in the room, then the solution will quickly dry and as a result of rearing. Due to this, the strength of plaster is lost, it begins to crack and can disappear after time.
Heating and drying
Gypsum plasters dry for a long time, within 2 weeks Any putty requires carefully drying after applying, and different binders that need to be dried into different types of building mixtures to be dried under certain conditions.
For drying and solidification of plaster on a lime-based basis, a small amount of carbon dioxide is necessary. It is forbidden to carry out a drying solution for a rapid method, since the solution will lose its elasticity and will give a lot of cracks.
Lime, and also completely dries over 2 weeks. At this time, the building should be operated 2-3 times a day. Drying is carried out not after a separate area is plastered, and when the work will be held throughout the room or all over the wall.
If there is cement in the composition, then such mixtures will dry faster, in just a week. When using materials with cement, there is no need for cement, since the cement is needed humidity that is in the air.
After drying the layer of putty in the room there must be a constant temperature of not mee 8 degrees At home, the best heating for drying walls after plastering is oven heating or central heating. If there is no possibility to use such heating systems, then there is a temporary heating of the room.
For these purposes, air heaters and thermal guns are used. With such equipment, the solution on the walls will die over the week if the room will be a temperature of 25-30 degrees.
After drying, the heating elements can be removed, but to ensure that the building is at least 8 degrees of heat in the building. This allows you to remain warm and not covered with moisture stains. Detailed process by watch in this video:
Canarifers can be applied as heating devices.
Those who are plastering the walls in the room where there is no heating, and in the street Winter, it is necessary to add special additives that allow you to apply a solution and maintain its properties even in a negative temperature.
You can get acquainted with the additives and the scope of their application on the table:
| Additive | Description | Method of preparation | Using |
|---|---|---|---|
| Chlorine water | It is more often used for outdoor work, but you can put the walls and inside the building. Plaster with such an additive can be used at -25 degrees. | To make an additive, you need to heat water to 35 degrees, after which it is possible to put a chlorine lime at the rate of 100 liters of liquid 15 kg of the mixture. Water is stirred until the mixture is completely dissolved in it. Next, leaves for 1.5 hours to insist. After a time, the additive can be poured into the container and is used in the amount that will be required. It is forbidden to warm up the composition of more than 35 degrees, otherwise chlorine evaporates. | It is not allowed to use non-dust water with chlorine, otherwise the plaster will give cracks. With the addition of cement-based solutions, which are used to apply on the walls of bricks, concrete, wood. For a qualitative solution you need to mix 1 part of the cement, 1 part of the additive obtained and 6 parts of the sand. It is necessary to work with the additive only in the respirator and gloves. After drying, chlorine is destroyed and does not affect a person. |
| Potash | A solution with the additive is used to shock the elements from the grid, reinforcement and other metal parts. Potash will not allow metal to be corrosion. The additive is used for cement mortar, possibly with the addition of clay and lime. | For the preparation of plaster is allowed to use cement of a low brand. The volume of the sweat itself depends on the temperature in the room. If the temperature is up to -5 degrees, then Potash is added in the amount of 1% of the total amount of dry mixtures. If the temperature is below, then you need to add 1.5% and 2% at temperatures below than -15. Clay should be initially sucking a bit, then mix with sand and cement, then water is added with sweat. | Used ready solution with potash for an hour. During application, the mixture should lie in a warmed container, and the person performing the work should use the appropriate means of protection. |
| Ammonia water | A additive on the factories is produced, in the form of a finished liquid in hermetic container. When diluted, the temperature of the additive and water should not be more than +5 degrees, increasing the temperature, ammonia will evaporate. | To make an ammonium additive, you need to add 3,16 liters of ordinary water per liter of solution (25%). If another solution is used (15%), then the liter requires 1.5 liters of ordinary water. A additive is added to the cement mortar into which you can add sand and lime. Use with plaster or clay ammonia is impossible. | The finished solution can be applied to very cold walls, in the room there may be up to -30 degrees. It is recommended to carry out work on lighthouses. |
Knowing what additives are used, it is possible to steak out the walls indoors even at a negative temperature. The solution will well hold on and not to lose its properties. See in this video for more details:
All quickly set up, so you need to prepare a solution in the amount that will be actually used for an hour. The mixture itself should be a temperature of at least +5 degrees.
When you familiarize yourself with that at what temperature inside the house you can stucked the walls, the work will be simplified, and the time, work and forces will not be spent in vain.
After all, often from ignorance of the temperature indicators of the plaster begins to give cracks, different defects appear or simply disappears slices.
Features of the temperature modes of applying plaster mixtures. Recommendations for plastering in the winter. Specificity of street plastering work. The consequences of temperature regime disorders.
Plasteur in winter and summer
It is adopted to be carried out in the warm period of the year.
The information below gives a representation in which temperature range can be conducted plastering and how to extend the construction season.
Information is subjective provided under the condition that the solutions contain appropriate modifiers in the necessary proportions.
Features plaster
The proportions and composition of binding substances cause the name of the plastering solution:
- Gypsum;
- Lime gypsum;
- Lime-sand;
- Lime-cement;
- Cement-sandy.
The filler uses various types of sand. Special additives guarantee various characteristics of mixtures and a wide range of temperature applied modes.
Separately there are dry, gypsum sheet plaster - drywall (GCL).
At what temperature can be plastering the walls inside the house
The condition of operation of plaster plaster is the temperature range from + 5˚ to + 30˚C.
If the walls of the building in winter are frozen, then plastering inside can only be carried out after pulling out the wall at half the depth.
In winter, in buildings with heating, the air must be warm above + 10˚C indoors, then the use of solutions does not require the addition of non-freezing modifiers.
If the temperature is from + 5˚ to + 8˚C, the mixture must have indicators not lower than + 8˚C.
If the air in the house is above + 23˚C, it is evenly moistened to moisturize the surface being launched.
In the summer of dry, hot time at temperatures above 30˚C and humidity less than 50%, it is necessary to maintain humidity on plastered areas and add special plasticizers.
Is it possible to winter in the unheated room
There are lime-cement, lime plaster mixes, air temperature when working with which from -10˚ to + 25˚C.
When attaching such mixtures, warming up the solution itself and the application surface should be not lower than + 5˚C.
The mixture should be prepared in the heated part of the building, while cooling the day below + 5˚C, and at night
At what temperature can be if no heating
Work on plastering buildings can be conducted at minus temperature. The mixtures are used in the composition of which there is cement and sometimes lime, with the addition of contamination components:
To reduce the labor intensity, it is better to prepare aqueous solutions of the required percentage and pour them into the prepared composition.
It is forbidden to be used as frost-resistant additives, calcium nitrate with urea or sodium nitrite in case of plastered buildings with elevated (above 60%) humidity or operation at temperatures above 40 ° C.
Further information on the preparation and application of plastering mixtures is presented in SP-82-101-98 and in SNiP 3.04.01-87
Stucco wall on the street
Stacking on the street is performed if the temperature is from-30˚ to + 5˚C, taking into account the above requirements and the absence of wind. When using water-based mixtures without frost-resistant additives - not lower than + 5˚C.
Temperature regime inside the house
Installation of sheet plaster plasters can be kept on:
- Metal crate;
- Wooden frame;
- Adhesive pillow.
Mounting on a metal frame is better to lead at a positive temperature to avoid spinning in places of contact with metal.
Installation on the adhesive basis, as well as priming and spitting of seams, it is better to spend better when heating the air inside the building is not lower than + 10˚C.
What will happen if not to observe the temperature regime
When deviating from the temperature regime, briefly and in small limits, the positive walls lose the plane and take wave-like forms. More gross violations of the technology entail the loss of the strength of the layer, decrease the adhesion to the carrier layer, the appearance of cracks, up to the collapse of the layer.
If factory plaster mixes apply - read the factory instruction. Watching inside the house is better to test at a temperature of +10 to + 30˚C. Walking on the street in the range below + 5 ° C must be carried out in windless weather or with the arrangement of protective tambour. When adding contamination modifiers, it is necessary to be neat.
Useful video
Performing plaster works in winter
General. Preparation and drying of premises and surfaces
General. In winter, plaster works are performed in compliance with a number of additional requirements. The moisture content of brick or stone walls to be plastered should not exceed 8%. The degree of humidity is determined by the laboratory. Those designs of the building (window and door slopes, niches), which are subjected to rapid cooling, should be finished before the onset of cold weather. If they are separated after the onset of cold weather, they take measures to protect plaster from premature freezing: the plaster is insulated, warming up. Preparation, storage, transportation of plaster solutions should be organized in such a way that the solution delivered to the place of work, at the time of its application had a temperature not lower than + 8 ° C. This can be achieved when the rooms, the bunker, the nominations are insulated and the room temperature is not lower.
10 ° С. Soluctural solutions in open air or in unheated premises must be insulated. The implementation of external plaster works at an air temperature below -5 ° C is permitted by solutions containing chemical additives that give the solutions to hardening in the cold and achieve the necessary strength. It is also allowed to plaster solutions with hammering lime.
Stone and brick walls, folded by freezing method, is allowed to plastering when the laying on the side of the plaster scale declined to a depth of at least half of the wall thickness. The use of hot water to accelerate the warming of escape walls or to delete with them the tax is not allowed. Preparation. The building in general or its premises to be plastered is prepared in advance. First of all, the gaps between the walls, door and window boxes and shutters and window slopes are shuffled. Inserted windows glare. Doors close tightly. Attic and interhesive floors
warm. For specifications, plastering is allowed to perform in winter at a stable average temperature indoor in the outer walls at a height of 0.5 m from the floor level not lower than + 8 ° C. To accelerate the drying of the plaster, the temperature is recommended to be touched to 4-10-1b ° C. At the same time, the temperature of the ceiling must be no higher than + 30 ° C. At a higher temperature, the plaster quickly dries, covered by cracks, loses strength. In rooms, where the temperature is below + 8 ° C, it is forbidden to work, since the plaster dries for a long time and, moreover, it can be trapped in the spring, it can be flawed, since the walls, thawing, isolated moisture and disrupts the grip of plaster with the wall. Wooden, fibrolite, cacisic and solomitic surfaces in these conditions are very saturated with moisture, swell and increase in volume. When drying, they are boxed and rut the plaster. Before plastering from the surfaces, it is necessary to remove score and then warm the room. Heating and drying. Plasters on different binding materials are dried differently. For example, for the normal process of drying and hardening of lime plasters, some carbon dioxide is required. Drying of lime plasters accelerated way does not give good results: the plaster is fragile and strongly cracks. Lime and lime-gypsum plaster are dried on average 10-15 days, checking the room two or three times per hour. Cement and cement-lime plasters are dried for 6-7 days, without conducting the premises, because during their hardening is required wet air. When drying plastering from a complex solution, it is necessary to navigate the main binder. The frozen crude plaster should be warm up immediately, remove detachable places, fix them and then dry. The best heating when drying the thing ^ Turks is central. If there is no central or furnace heating, arrange temporary.
For large volumes of plastering, air heaters are used. These plaster plasters are dried for 6-8 days at air temperature + 30 ° C. As soon as the plaster dries to the necessary humidity (8%), the drying is stopped and the temperature is maintained in the room + 8 ° C so that the walls are not cooled and raw spots did not appear on them. For drying of large plastered surfaces, campauric installations are also used. The installation includes a canoriorifer with a furnace, blowing installation with a centrifugal fan that is injected by hot gases through air ducts (pipes), a pipe kit and an additional fan that bulk air. Air ducts are passed into the building through window or doorways. If there are workers in the room, then only hot air is served in the building, and exhaust carbon monoxide gases are dismissed. Electro-charitor has a cylindrical sheet of sheet steel, in which heating elements are placed on the stands. In the electrocalorifer fan from the electric motor, the air is injected, where it is heated and served out. The TG-150 heat generator is designed for use in zones with air temperature from - 35 ° C. It works on liquid fuel. The burner of infrared radiation I am intended for drying plasters in under construction and repaired buildings under the condition of air exchange at least two times per hour, providing timely removal of combustion products.
Watching solutions with antiorrosal additives
Solutions on chlorinated water. In unheated premises, in rooms with partial heating, as well as in the cold, plaster works are performed by solutions with chemical additives.
For external plaster works, chlorinated solutions are used (solutions shown by chlorinated water). Such solutions can be placed surface at temperatures up to -25 ° C without subsequent heating of plaster. To prepare chlorinated water, water is poured into the boiler, heated to + 35 ° C, then a chlorine lime is put into it (by 100 liters of water 12-15 hours of chlorine lime). The solution is stirred until the lime is completely dissolved. The resulting chlorinated milk is posed by 1-1.5 h for settling, after which the chlorinated water was drained into the expenditure tank and is used to prepare a solution. Chlorinated water should not be heated above + 35 ° C, as chlorine will die and water will lose activity. It is categorically forbidden to use non-chloric chlorinated water, because when you fall into the plaster or muthes, cracks appear in it.
On chlorinated water, you can prepare complex or cement solutions that are plastered by wooden, brick or concrete surfaces. Other types of solutions are not prepared on chlorinated water.
The following compositions of chlorinated solutions are recommended - cement: limestone dough: sand (1: 1: 6) or cement: Mixture of clay with ground slag: sand (1: 1.5: 6). These solid formulations are used to shock brick, slag block and wooden surfaces. Concrete surfaces are placed by cement solutions of composition from 1: 2.5 to 1: 3. The temperature of the chlorinated water for the preparation of solutions should be no lower than + 10 ° C, the temperature of the materials depends on the outdoor temperature (see page 138). The lower the air temperature, the higher the temperature of the solutions should be, and in windy weather, higher than in the quiet. The temperature of the plastering solution is independent of the outer air temperature at the time of applying and grouting at least + 5 ° C. Chlorinated solutions are applied by manual or mechanized methods. Each subsequent layer of the solution must go to the thickened previously applied layer. After grappling, the crossages perform the grout. Insufficiently dried ordinary? Plasters, applied in winter, are covered by Founding, which reduces their strength. The strength of chlorinated plasters in the cold rises. Chlorinated solutions can be painted alkyl and light-resistant mineral paints (earthen), such as mummy, ocra, iron sucrick. Workers prepare chlorinated water or a solution and using chlorinated solution directly on plastering, should undergo safety instructions. To work with these solutions, they must wear tarpaulin workwear, rubberized apron and mittens; It is necessary to go on rubber boots. It is possible to work with chlorinated solutions in a gas mask or respirator.
Watching with chlorinated solutions indoors is not allowed. As an exception, it is allowed to placing the niche under the radiator, provided that the windows are open.
Chlorinated plaster after drying is harmless, as chlorinated solutions are completely sealed on the eighth day, and during this time chlorine from them is disappeared. Solutions with the additive path. Solutions with the addition of potash do not give evils, do not cause corrosion destruction of the metal, so they can be used and when plastering net-reinforced structures. In an aqueous solution, the potash is prepared cement-clay, cement lime and cement solutions. Color solutions are prepared using. alkaliy pigments. For the preparation of the solution use portland cement low marks. The amount of potash is taken depending on the outdoor temperature. For example, at the outdoor temperature of up to -5 ° C, potash take 1% of the mass of the dry mixture, at an outdoor temperature from -5 to - 15 ° C - 1.5%, at temperatures below - 15 ° C - 2% . Potash is added to a dry plaster mix in the form of an aqueous solution. Cement-clay solutions are used as follows: from 1: 0.2: 4 to 1: 0.5: 6 (cement: clay: sand). For the preparation of the solution, the dried clay is mixed with cement and then embed the potash with aqueous solution. Clay can be previously turned into the dough, and then mix with cement and sand.
Cement-lime solutions should contain no more than 20% of the lime from the mass of cement. Prepare them in the usual way. Cement solutions must be low-fat, 1: 3 composition. The potash salt is dissolved in water, which prepared a solution from a cement-step mixture or added this water to thick solutions. It is recommended to use pre-heated solutions to + 5-m0 ° C. The solution should be used within an hour since its preparation. The solution is stored in a warmed container. Prior to the start of plastering, the surface is cleaned of snow, nondes and contamination. Stamps and lighthouses are arranged from a solution that plastered the surface. A spray with plastering in conditions of reduced temperatures. Tours are not applied to the surface, and the creamy solution is prepared and immediately applied to the base layers with a thickness of 10-12 mm. The soil is smoothed, scratched and in its thickened layer apply a cross-section with a thickness of 7-8 mm. The crossbar is moving and rubbed without wetting with water. A worker prepared with a potash additive should be dressed in the same way as working with chlorinated solutions. Solutions on ammonia water. Solutions prepared on ammonia water do not give vigors. Ammonium water is obtained from the factory, in the workplaces in mortar nodes it is bred to the necessary concentration. The temperature of ammonia and ordinary water for its dilution should not exceed + 5 ° C, since at a higher temperature ammonia evaporates. If the ammonium water has a 25% concentration, then to obtain ammonia water of a 6% concentration on each liter, 3.16 liters (rounded 3 l) of ordinary water are added. If the ammonia water of 15% concentration is brought, then 1.5 liters of water are added to 1 liter. Ammonium water delivered from the factory or divorced in the workplace is stored in hermetically closed dishes, it is best in glass bottles with fit plugs. Ammonia water is indulging cement and cement-lime solutions with sand; Lime, lime-gypsum and cement-clay solutions shut ammonia water. When grouting on concrete, it is recommended to use a cement solution of composition 1: 2-1: 4 (cement: sand); For plastering of brick, slag concrete and wooden surfaces - cement-lime-sandy solutions 1: 1: 6-1: 1: 9 (cement: limestone dough: sand). Lime dough is bred ammonia water, the temperature of which should be no lower than + 5 ° C. The temperature on the genus solution depends on the outdoor temperature. If the outdoor temperature is up to - 15 ° C, then the temperature of the solution in the workplace should be + 2-GZ ° C. At the outdoor temperature to -25 ° C, the temperature of the solution should be not lower than + 5 ° C. The execution of plaster works with ammonia water solutions is permissible at air temperature to -30 ° C. To obtain solutions of the specified temperature, the materials are heated in them. After stirring, the temperature of the limestone test and ammonia water should be no higher than + 5 ° C. The solutions must be submitted to workplaces in insulated boxes closed with soft rubber pads, which prevents the implacing ammonia and retains heat. Stucco on ammonia water after freezing has high strength, the surface film does not give peeling.
It often happens that the construction process continues in winter. Therefore, the question at what temperature can be plastering, becomes the most relevant.
But no less important is in such conditions and which rules should be followed. Let's try to answer all this below.
Conditions and preparatory work
In winter, it is necessary to plaster, observing a number of additional requirements. Wall moisture should not be above 8%. Door and window, niches and other structural elements of the building under rapid cooling should be carried out before the winter. The solution during operation with them must have a temperature from + 8 ° and above.
This is possible only when the bins, the solid workers (with the engine of plastering) are insulated, and the temperature in the premises is kept at the level of +10 ° C.
The result of plaster works in a non-heated room
Outdoor plastering operations at temperatures, below -5 ° C are allowed only with solutions that contain chemical modifiers that give them the ability to harden in the cold and reach the settlement strength. You can also work with solutions containing a ground left lime.
The walls folded by the freezing method can be placed if the walls of the wall declined to the depth of no less than half of its half. The use of heated water to accelerate the process of heating the walls and deleting toes with them is strictly prohibited.
Premises requiring plaster prepare are prepared in advance. Be sure to make the slots between the window, door boxes and walls, the slopes are plastered, the windows are glazed. Doors are installed and tightly closed, inter-storey and attic floors are insulated.
In winter, plastering can be placed at an average temperature in the rooms at the outer walls at a height of 50 cm on the level of floors at least +8 ° C.
At the ceiling, the temperature should not exceed +30 ° C. With higher temperature modes, the solution quickly dries, cracks and loses strength.
Heating and drying
Calorior for drying plaster (price - from 14,000 rubles)
Materials based on different binding substances are dried in different ways. For drying and hardening, a small amount of carbon dioxide is needed. Drying with an accelerated method is contraindicated: plaster becomes fragile and severely cracks.
Lime, lime-gypsum trim driving around 10-14 days. The room must be operated two or three times a day. Cement, cement-lime solutions are required to dry 6-7 days.
The room is not ventilated, because Wet air is needed. When drying the plasters from complex mixtures as a landmark, take the main binder.
The best heating for normal rejection of the plaster is central. If it is, and also there is no oven heating, temporary is satisfied.
If the scope of work is large, air heaters are used. They will dry around 6-8 days at a temperature of +30 ° C. As soon as it dry out to the humidity of 8%, the temperature is installed in the room in +8 ° C, so the walls are not cooled and will not cover with wet stains.
Canarifers can also be used. The installation kit includes the calorior itself with the furnace, the blowing unit with a centrifugal fan, which pumps hot gas through the pipes, a set of pipes and another fan, injection air.
Solutions with antiorrosal additives
To the question: can it be plastering in frost, the answer is simple.
In non-heated rooms, as well as from the outside at minus temperatures, the plaster is prepared with chemical additives.
Chlorine water
For external work, mixtures are used that are inducing chlorinated water. They can be operated under temperature modes up to -25 ° C.
To prepare additive pour water into the boiler and heat up to +35 ° C. Put in the container the chlorine lime at the rate of 15 kg per 100 liters of water. Stir the composition until the lime is completely dissolved. The resulting milk should be 1-1.5 hours.
Drain sucks into the consumable container and use as needed. The composition cannot be heated above +35 ° C, otherwise chlorine will destroy. Use chlorinated water that has not been satisfied is prohibited, when you get a mud in the plaster it cracks.
At such an additive, you can make cement and complex solutions and plastering brick, concrete and wooden surfaces. It is impossible to do on it.
For slag block, brick and wooden walls, it is necessary to use chlorinated mixtures: cement + lime + sand in proportion 1: 1: 6 or cement + clay with slag + sand, in proportion 1: 1.5: 6. Concrete is placed in cement-sandy solution in a proportion of 1: 3.
Attention! When working with chlorine mixtures, wear a respirator, tarpaulin specials, rubberized mittens, apron and boots. After drying, such solutions are harmless, since chlorine of them gradually disappear.
Potash
Solutions with an additive Potash do not form evils and do not contribute to the corrosion of the metal, recommended for plastering net-reinforced structural elements.
Cement, cement-clay and cement-lime mixtures are made on the hidden aqueous solution. For the manufacture of plaster solutions, cement low grades is taken. The volume of the added sweat depends on the air temperature.
If this indicator is not lower than -5 ° C, the potache requires 1% of the volume of the mixture in a dry state. At air temperature -5 - -15 ° C, you need a 1.5% supplement. If on the street frost, below -15 ° С, 2% additives are added.
Cement-clay solutions with sand fillers are prepared in proportions from 1: 0.2: 4 to 1: 0.5: 6. The dried clay is mixed with cement and sand, and then embedded with aqueous hidden solution.
Cement-limestone mixtures should have in the composition of no more than 20% of the lime (from the weight of cement).
Cement solutions must be low-fat, in proportion 1: 3. Salt Potasha dissolves in water, on which the mixture is made. To work, it is necessary to use a solution having a temperature above +5 ° C.
Note! It must be used for an hour after cooking.
The solution is stored in a warmed tank. It is necessary to dress in the same way as when working with chlorinated solutions.
In the photo ammonia water
This modifier is produced at the factories, and at the construction site is divorced to the desired concentration. It is necessary to ensure that the temperature of both ammonia and ordinary water, which it is divorced, does not exceed +5 ° C. At higher temperatures, ammonia will evaporate.
If the concentration of ammonia in water is 25%, then 3.16 liters of ordinary water is added to obtain a finished additive that has a 6% concentration, for each liter of the factory solution. If ammonia water has been purchased with a 15% concentration, 1.5 liters of water is added per liter.
Instructions for use do it yourself:
This modifier must be stored in hermetically closed containers, for this, glass bottles that have laid tubes are suitable.
Ammonium water can be added to cement and cement-lime-sand solutions, but lime-gypsum, cement-clay and lime mixtures are imposed to this additive.
When the concrete surfaces are grouting, it is necessary to use cement mixtures in proportions 1: 2-1: 4. For plastering works on brick, slag concrete and wooden surfaces - cement-lime-sand formulations must have a ratio of 1: 1: 6-1: 1: 9.
Lime is divorced by ammonia water, the temperature mode of which should not be lower than +5 ° C. The heating temperature of the plaster mortar depends on the similar indicator of the outer air.
If the air is cooled outside to -15 ° C, then the temperature of the solution when working with it should be + 2-3 ° C. With the outer air mode to -25 ° C, the temperature of the mixture should be maintained at least +5 ° C.
It is possible to operate with an ammonia additive solution at ambient temperature to -30 ° C and best
Finishing on an ammonium modifier after freezing has high strength, its surface film does not flake. Such plasters continue to gain strength indicators both in the cold and at the plus temperatures, after thawing.
Outcome
We hope our material was useful for you. It remains to offer you a video in this article and wish you good luck in a difficult construction business.