How to deal with alkali formation and surface reaction of cement wall.

How to deal with the alkali of the cement wall, please clean it carefully1On the basis of 3 will oxalic acid is part of the wall, be careful not to get your hands on it.

2.Scrape the floor glue again. This is to better deal with the alkalinity problem.

A similar situation would have occurred if there had been no sand filling.

4.Clean alkaline areas until they are easy to handle and the alkali does not dry out.

How to deal with the first step of the cement wall alkali.

The walls are made of alkali, which is alkaline and is commonly known as cement sugar. The main reaction of carbon dioxide in the atmosphere is the deposition of calcium carbonate on the surface of calcium cement concrete products: calcium carbonate can be used or calcium hydroxide solution in water-based products, when the concrete gap analysis calcium evaporation crystals are concentrated on the surface of the water.

In addition, relatively easily, alkali metal hydroxides, carbonates, or shell surfaces are quickly made of concrete or limestone sand, including these"Oozing cream salt"The amount of other alkaline salt solutions in the water-soluble organic matter formed by the frost.

How to deal with alkali on cement walls to take measures to prevent flowers: one should be able to reduce the concentration of calcium hydroxide in the cement material, reduce the level of blooming. Fly ash has a certain effect on the mixture. The addition of certain antagonists is effective.

When the chemical properties of various materials easily absorb moisture in the denseness of the main material containing alkaline impurities that exceed a predetermined value (marble tiles are the most alkaline). Acids such as acid rain react to form salts such as carbonates. After the water evaporates, the white crystals precipitate on the surface of the brick.

The reason for how to deal with the alkali of the cement wall is that the wall of the base: 1, not water: on the dew water, we need to pay special attention to many details, especially the position of the door several times, we do not leak, I am the best waterproof bathroom behind the door, found the wall on both sides of the bathroom door, because they properly deal with the leakage of the door for a long time, all of us, if there is a small amount of water, it penetrates, know that soaking in the wall is a phenomenon, back to the base due to the distance, Please check if the water resistance is optimal before handling.

2. Wet wall: We have to change the wall surface all the time, the general moisture content, we often go out of the wall is more humid, the moisture does not go out, which will be hastily decorated over time, coupled with late putty powder coating, due to excessive moisture inside the wall, in the water retention time"Radiate back to base"phenomenal case. 3. Human rationality is that if there is a potential to cause water seepage in the wall, especially some residents who love to be clean and clean, clean friends, so the water is absorbed by the ground, the ground is mainly a cement mat, the water is easy to penetrate, and an alkaline barrier occurs on the wall for a long time.

The alkali of the cement wall is caused by the dampness of the wall, which will cause the hollow drum to fall off for a long time, and if it is high-altitude, there may be a problem of falling bricks......

The best way to deal with the anti-alkali of cement wall is as follows:

Tools: shovel, oxalic acid or white vinegar, putty, latex paint.

1. First of all, if there is lime or putty on the wall, the alkali return phenomenon on the wall should be shoveled off first. Able to expose cement walls.

2. Then spray the wall with oxalic acid or white vinegar, and use the acid-base reaction method to make the alkali on the wall disappear.

3. After the wall is completely dry, the wall should be waterproofed first.

4. Then hit putty, you can do putty twice. Then apply latex paint so that the wall is not easy to return to alkali.

A way to prevent anti-alkali phenomenon on the wall

1. In order to better prevent the phenomenon of anti-alkali on the wall, a waterproof layer can be applied on the surface of the cement wall, so as to produce a film that can avoid reacting with the air.

2. If you want to avoid the occurrence of anti-alkali, it is necessary to do a good job of keeping warm, so as to reduce the dead angle of the cold grip bridge on the wall. In humid weather, it is necessary to ensure that the room is dry and reduce the humidity in the air.

3. At the same time, do a good job of cleaning the wall and dispose of the anti-alkali on the surface, which can also play a preventive role, but it should be noted that it must not be cleaned with acidic substances, so as not to cause corrosion and unnecessary trouble.

Cement wall anti-alkali refers to the reaction between the concrete on the cement wall and the carbon dioxide in the air in a humid environment to produce carbonate, causing the wall surface to turn white and affect the appearance. How to solve the problem of anti-alkali on cement wall? Here are some practical tips.

1.Pickling treatment.

Pickling treatment can effectively remove the alkaline substances on the cement wall, so that the wall is no longer white. First, spray the diluted hydrochloric acid on the whitish wall, wait for about 5 minutes, and then rinse off with water. It should be noted that the pickling process requires professional construction to avoid safety accidents.

2.Dry cleaning.

Dry cleaning refers to the use of special equipment to clean the cement wall, which is suitable for large-area anti-alkali treatment of the cement wall. Before cleaning, the dust on the cement wall should be cleaned up to avoid affecting the cleaning effect. The advantage of dry cleaning is that it will not make the wall damp and will not cause secondary damage to the wall.

3.Saturated lime slurry treatment.

Saturated lime slurry treatment is a common anti-alkali treatment method for cement walls, which effectively solves the problem of anti-alkali of cement walls by coating the cement wall with a layer of saturated lime slurry to prevent carbon dioxide from reacting with alkaline substances in the concrete. However, due to the difficulty of construction, wax infiltration requires construction personnel with a high level of technology to carry out the reed local operation.

4.Surface sealant treatment.

Surface sealant treatment refers to the application of a special surface sealant on the cement wall to cover the surface of the concrete, prevent the invading of moisture and carbon dioxide in the air into the concrete, and avoid the occurrence of carbonization reaction, thus solving the problem of anti-alkali on the cement wall. Compared with saturated lime slurry treatment, surface sealant treatment is more convenient and economical.

The above are some practical tips for anti-alkali treatment of cement walls, which need to be selected according to the actual situation. In addition, in the usual maintenance, you can also use wall moisture-proof agent to keep the wall dry and avoid the occurrence of anti-alkali on the cement wall.

The best way to deal with anti-alkali on the wall is brush + waterproof coating.

Brush the anti-alkali area with a brush first to avoid the expansion of the alkali return range. Then use a brush dipped in oxalic acid and other anti-alkali cleaners, taking care to apply evenly. Let it stand for a long time, wait for it to dry thoroughly, and then find a clean brush and brush white latex, putty and other materials to the wall.

Finally, you can spray a professional waterproofing agent.

The phenomenon of anti-alkali on the wall

The main reason for the anti-alkali appearance of the wall is that the wall is damp. The reason why the wall is damp is that it may occur more often in the summer, because there is more rainy season in summer, so it is normal for the interior to get damp.

If there is moisture, it may dilute some of the materials on the wall. After drying, we will see that there is an obvious area on the wall that will stand out a little, and when it is dried for a certain period of time, it will fall off, and the cement will be exposed to the outside and very ugly, because the cement inside reacts with the air outside.

Generally, there are more cases in the south, because the air in the south is more humid and there is more rain, so it is easy to appear this phenomenon.

The reason for the alkali return on the wall

1. The reason may be that during construction, workers do not strictly follow the standards for construction, or use inferior materials. It will make the alkali return phenomenon in the later stage more serious.

2. If the indoor humidity is high, there will also be alkali return on the wall.

There are several treatment methods for anti-alkali on cement walls: 1Alkaline Neutralization Method:

Use acidic substances to neutralize the alkaline substances on the cement wall, such as dilute acid, dilute hydrochloric acid, etc., spray them on the wall, and then rinse them off with clean water. 2.Anti-alkali coating method:

The use of anti-alkali paint on the cement wall can effectively prevent the penetration and reaction of alkaline substances. 3.Alkaline substance dissolution method:

Use alkaline substances to dissolve alkaline substances on the cement wall, such as acetic acid, nitric acid, etc., spray them on the wall, and then rinse them with clean water. 4.Alkaline stripping method:

Use alkaline substances to peel off the alkaline substances on the surface of the cement wall, such as sodium hydroxide, potassium hydroxide, etc., paint them on the wall, and then rinse them with clean water. It should be noted that when dealing with the anti-alkali of cement walls, appropriate methods should be selected to avoid damage to the wall. At the same time, waterproof treatment should be carried out in time after treatment to avoid the problem of anti-alkali caused by water penetration of cracks.

Plaster or cement for wall holes.

As long as the hole is not very big, you can use gypsum powder to make up for it, remember to add glue to the gypsum powder. If the hole is large, it should be filled with broken bricks, stones, and cement slurry, and then leveled with gypsum powder and putty powder. If you add gypsum powder and glue directly, because there is too much and too much filling, the drying time will be longer, and there will be obvious cracks in the filling, which is not firm.

Putty is a wall decoration material that is an indispensable product for painting. The cement is prepared with a small amount of base paint, a large amount of filler and a suitable amount of pigment, and the pigments used are mainly iron red, carbon black, chromium yellow, etc. The following is an introduction to how to deal with the cement wall and the steps before directly scraping putty.

How to deal with the cement wall before scraping putty directly.

Before scraping putty on a professional wall, look at the walls and inspect the walls in detail to see if they are flat and firm. If there are cracks or large holes in the wall, you can ask the developer and ask them to correct them. If the flatness of the wall is relatively low, you can use plaster to fix the flatness, or you can fill it with cement to ensure that the wall is absolutely flat.

Cement wall directly scrape putty steps.

1. Protect the finished product.

When scraping putty, cover items that cannot be moved with protective film to prevent paint from dripping on the items, and the floor can be covered with newspaper.

2. Basic processing.

The base layer can be treated to clean the stripped or lifted walls, which are then filled with cement mortar. If it falls over a large area, it is best to remove it. For cracks, you can place mesh fabric directly on it to prevent it from cracking and prevent it from cracking again in the future.

3. Leveling and repair.

If the error is greater than 3 mm, it must be leveled. It can be repaired with a plaster. If the angles of yin and yang are not equal, a plaster cast can be used first, and a ruler can be used for perpendicularity detection.

4. Putty putty.

The putty applied to the surface of the wall is smooth and softer, but the scratches must be even, the thickness and constant thickness are maintained, and the irregular area can be scraped off several times so that the area is flat. After shaving, it can be polished and polished with light to make it easy to see the flatness of the building area.

5. Paint construction.

Primer must be applied first, mainly to keep the area of the structure sealed, which increases the adhesion of the superstructure. When applying a topcoat, it can be applied from one corner and in a certain direction to avoid repeated brushing, which can easily create scratches in the area.