In our daily life, there are often cases of wall basalt, and the methods of treating efflorescence are also varied. Most people usually deal with alkali-resistant primers and waterproof glues, but the effect is not very obvious. What causes the basalt of the wall? How to deal with the wall of ubiquitine ? Let's take a look with Xiaobian.
First, the cause of wall basalt
1. In general, basalt is caused by the high water absorption of the material and excessive alkali content of the cement in the adhesive. At the same time, the crystal of natural stone is relatively coarse, and secondly, its capillary is invisible to the naked eye. Then, the water-carrying chemicals carried by water are immersed into the stone through a capillary tube. 
2. The wall damp proof layer is not done well or does not make the damp proof layer also can cause the basalt alkali on the wall. If the wall does not have a moisture barrier, the underground water will rise along the capillary of the wall and evaporate from the surface of the wall to cause basalt on the wall.
3. If the alkali of the substrate is too high or if the foundation is a saline-alkali base, it will also cause basal alkali on the wall. At the same time, the sealing primer has poor sealing performance and is not water-resistant or alkali-resistant. If there is too much water inside the wall, it will flow out through the surface of the outer wall. 
Second, how to deal with the wall of alkali
1. Reduce the content of soluble salts and alkalis inside the material. An experiment can be done. After the clay brick is saturated with water, it is allowed to dry naturally in a cool place, and then its surface is whitened. Second, when choosing cement, choose the cement with the lowest alkali content. When controlling the soluble salt content of the concrete, do not use an additive containing high alkali metal content.
2. How to deal with the ubiquitine on the wall, we can also improve the impermeability of the substrate. When preparing concrete and mortar, use suitable additives. For example, the use of alkaline water or high-efficiency water-reducing agent can reduce the amount of water used for stirring, thereby reducing the porosity of the concrete, improving the structure of the pores, and improving the impermeability.
3. The surface of the material is treated with water-repellent treatment. Under normal circumstances, cement-based composite materials such as concrete and mortar are all hydrophilic and relatively easy to absorb water. Then, these materials should be treated with hydrazine so that a hydrophobic film forms on the pore walls. This will greatly reduce water absorption and effectively prevent efflorescence on the walls. 
4. The moisture-proof design of the wall should also be emphasized. The use of the ground beam or foundation beam as the moisture-proof layer is the best, and the vertical moisture-proof layer of the wall cannot be ignored. If it is a multi-layered bottom wall, the use of cement mortar can also effectively prevent the water from rising, thereby improving the moisture resistance of the foundation.
Editor's summary: The above is a description of what is the cause of the wall basalt and how to deal with the efflorescence of the wall . I hope to help my friends. If you need to learn more about basalt in the wall, you can always pay attention to us, and the following articles will be more exciting.
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