How to deal with leaks in external walls

The leakage of external walls caused many owners to feel headaches. The leakage of external walls was mainly caused by the phenomenon of water seepage in the external walls of houses during the housing construction. It was difficult to find the source of water seepage once the external walls of the houses had water seepage. Therefore, in the face of leaks on the external walls, they are incapable of knowing what to do. Then, Xiaobian will introduce how to deal with the leakage of external walls.

First, the external wall leakage hazard

We should all understand that if the external wall leaks seriously, it will reduce the durability and safety of the engineering structure. Because there are gap cracks in the concrete, there are voids and cracks in the masonry blocks and mortar. After the external wall leaks, When water enters into it, if the temperature drops below zero, the water will form ice, and its volume expansion will be about 90%. It will directly press the material and cause the surface erosion of the material; at the same time, the internal residual water will be squeezed, and the internal pressure will also be generated. Stress, which causes cracks or causes cracks to expand further, is called freezing. The greater the porosity of the material, the more cracks, the greater the moisture content, and the lower the humidity, the more severe the freezing. With the increase in the number of years of use, cold erosion has become more and more serious. As a result of the freeze-thaw, the section of the material is continuously reduced and the cracks are continuously increasing and broadening, and the bearing capacity of the material is also decreasing. This is very rigorous and terrifying.

If the protective layer is damaged, it will lead to corrosion of the steel bar, and the cross section of the steel bar will continue to decrease. In addition, when the steel bar is rusted and its volume expansion is about 1-4 times, the crucible will be squeezed, which will cause cracks or cracks to further expand, and even collapse.ç ¼ protective layer. All of these will lead to reduced structural durability and safety.

Second, how to deal with leakage of external walls

1, carefully check the scope of emptying, cracking, marking, and then emptying, cracking site chiseled out, exposing the original base surface, if there is a crack in the wall surface need to chisel into a V-shaped opening to clean up the floating dust, and Sprinkling water.

2, with Laurel water does not leak according to the water to water ratio of 1:3 mixed with water, quickly stirred into a slurry, squeezed into a clay mud by hand, to a slightly hot, welcome to V-shaped groove at the press density.

3. Mix the water-repellent mortar with the concrete of Lauyall mortar and cement according to 1:2 to 3, and apply evenly to the area to be repaired.

4. Mix the Loual mortar waterproofing agent with cement and sand in a weight ratio of 1:2:6 and mix it into a waterproof mortar. Apply ordinary plastering methods to the areas to be repaired, and pass along the leveling base.

Editor's summary: How to deal with the leakage of the external wall is introduced here, and I hope to be helpful to everyone. If you want to know more related information, you can pay attention to this website information.

Exterior wall tiles