Why is the anti alkali in rural housing serious and what is the reason?How to avoid and solve?

In fact, not only in rural areas, but also in cities, low-rise users will face this problem more or less, especially the old houses. So, how is the house anti-alkali formed, and what causes it?And how to avoid and solve it?

For this reason, I specially consulted an experienced master, and then let the master teach you how to solve the problem of anti-alkali in the house.

First of all, the anti-alkali of the wall of rural construction is commonly known as cement frosting, and the main reason for cement frosting is that the cement product calcium hydroxide reacts with carbon dioxide in the atmosphere to generate calcium carbonate and deposit it on the surface of concrete products. Generally speaking, the most used building material for self-built houses in rural areas is still red brick. Red bricks need to absorb a lot of water to increase the viscosity of bricks and cement when they are used.

After the decoration is completed, the red bricks in the wall are often not completely dry, resulting in the phenomenon of "wall anti-alkali". In addition, there may be a reason why the cement mortar contains more alkali, and we know that most of the cement mortar built in rural areas is manually mixed.

And this has caused that the ratio is not accurate, and in order to facilitate the master's painting operation, some water-retaining mortar will be added to the cement mortar, so that the problem comes, the alkali content of the mortar king is very heavy, so it is easy to return to moisture when it rains or leaks, resulting in the wall returning to alkali yellowing and even the wall skin falling off. So, how to avoid and solve it?We can remove all the parts of the wall that return to alkali, and use a certain concentration of oxalic acid solution to add warm water to mix.

Then, evenly brush on the wall, which can neutralize the alkalinity of the wall, and wait for the solution to dry before continuing to repair and paint the wall, so that it can be completely solved. Of course, if the wall only has the alkali return phenomenon on the surface, this kind of problem is to use a certain proportion of oxalic acid solution for cleaning. If you want to avoid this phenomenon in the decoration process, you can seal the wall with a water-based sealing primer before applying the topcoat, this method can prevent alkali reflux, but the effect is better with a sealing primer.

Have you learned?I hope that you who are decorating, or who are preparing to decorate, must avoid this kind of thing before construction, so as to prevent the impact on life after moving in.

In fact, the main reason for the serious anti-alkali in rural houses is because the humidity in the air is too high. There is also the fact that some of the materials used are substandard or even pirated. If you want to avoid it, you must choose the best materials.

Not only in rural areas, but also in the middle and low floors of cities, mainly because of the dampness, and it is better to build houses in summer, because the temperature is higher than in other seasons, and the record of alkali reversal will be greatly reduced.

Rural building anti-alkali is serious, this is because the rural foundation is relatively shallow, and the interior of the house is relatively damp, so it leads to anti-alkali of the wall skin, want to avoid and solve this situation, you need to use a special paint to brush the wall, but also you can choose the way of wallpaper, and must be ventilated frequently.

Alkali reflux is due to the reaction between the substances in the cement and the carbon dioxide in the atmosphere. Adding a certain amount of oxalic acid solution can avoid the solution.

What is the reason for the serious alkali return in rural construction? How to solve it? How to avoid it?

The cement yellow sand is alkaline; Rural construction of houses, cement yellow sand is a necessary raw material, but the market to produce concrete, river sand companies are uneven, some concrete contains a very large alkali, at that time with river sand, water mixed with the situation, can not be found at all, but when the concrete is applied to the wall, it will gradually seep out from the wall, leaving a white chemical substance on the wall, that is the alkali, if there is a toilet or restaurant kitchen on the mezzanine, the more serious the alkali. If the wall itself is a problem, first look for which part of the wall, and then shave the exposed wall, dry or wait for dryness, wipe a layer of hydrochloric acid, shave off again after the hydrochloric acid is dry, observe for a day or two, the wall is not wet and cold, then you can directly repair the wall, because the red bricks are more alkaline, so the countryside has basically not applied red bricks to build walls in recent years.

The roadbed avoids ditches; When building a house and choosing a roadbed, you must avoid the area of the ditch in the village, even if the ditch is smoothed and widened, because every ditch in the village is the lowest terrain, as long as the rainy day opportunity gathers here, the precipitation will seep into the room according to the roadbed and the wall, and then produce an anti-alkali situation. Cement yellow sand to buy genuine; When building a house, we must buy cement yellow sand from reliable manufacturers, can not set the map cheap and the gains outweigh the losses, there are some bad businesses using sea sand fake river sand, not only the anti-alkali situation is more serious, and the salt in the sea sand will erode the building steel bar, resulting in safety risks for the residence, and the mixed water body is best pumped from underground, river water, rivers are not recommended to apply.

Ensure that the wall is dry and re-plating; In the case of the house wall, it is not necessary to urgently brush the wall in order to catch up with the construction period, but to wait for the wall to dry out before wiping, and at the same time to do a waterproof treatment for the partition is the bathroom, restaurant kitchen, and bottom end, so as to prevent the anti-alkali situation to the greatest extent.

This is due to the fact that the house was not built to protect against water and moisture, and the walls were not treated and the weather was not prevented. You can paint the walls with some waterproof paint or moisture-proof paint.

This is due to the fact that the material used is not particularly good, so this situation will occur, and it is necessary to choose a special material and reapply it. When treating the wall, you should clean it first, and then choose a better paint to avoid this problem.

Rural construction, if the room is more serious, indicating that the rural climate is more humid, in this case should pay attention to the use of moisture-proof, waterproof materials, it is recommended to choose real stone paint.

It is due to the fact that there were no good materials at the time of construction. It is necessary to pay attention to the process of decoration, the protection of the wall, the waterproof, and the moisture-proof.

You can use some soil methods to keep the wall dry, and pay attention to hygiene.

This requires a certain amount of relevant knowledge and a certain amount of scientific methods.

This should be handled by some professionals, otherwise it will be very serious.

This can be dealt with in consultation with relevant experts, and the reasons for this situation are not very different in each place.