What if there is an empty drum on the wall?

When the wall is empty, we should first determine the specific location of the empty drum, and then draw the dividing line with chalk.

The width of the part of the dividing line to be controlled should not be less than 100mm, and the cutting line should be neat and standardized, made into a square or rectangle, and polished with a grinding wheel after the cutting line is drawn. Cutting machine cutting, but it is forbidden to chisel directly without cutting. Construction must be cleaned to the base, dirt on the surface of the base needs to be cleaned, and steel wire mesh is needed at the junction of different base materials. The lap length of each side shall not be less than 100mm, then hang steel wire mesh and wet it with sprayer. Brush at the bottom and around. Colloidal cement slurry shall be cured by spraying water within 12 hours, so that the uneven wall surface will be leveled before plastering at least three days later. If the base is too slippery, you can use a straw hat or brush the interface agent. The area with empty drum cracks should be cut off with a cutting knife and then removed. Repaint. The hollowing of the wall may be due to the improper proportion of plastering mortar and the large amount of cement, which leads to high hydration heat.

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