How to test empty drum
Five-point tapping method is a famous method to check whether there is hollowing phenomenon in ceramic tiles. The specific method is to find a metal object (the best tool is the drill bit of the electric drill on the construction site or your own key, and the stainless steel spoon can also be used), and use it to tap and paste the four corners and the central part of the tile.
If there are more than two empty spots at the above five points, it can be said that the tiles are not pasted properly, and the empty places in the middle should be removed and pasted again.
However, it should be noted that the tiles on the kitchen flue and the wall wrapped with cement board are not suitable for this inspection method, because the wall itself is not firm, so it is also empty drums.
The harm of empty drum:
1. The tile at the empty drum is not stressed, and it will be easily broken by external force in the future;
2. The hollowing may lead to the gradual expansion of the hollowing range of the tiles in the later period, and finally the tiles will tilt or fall off;
3. Empty drum will make it difficult to drill holes in the wall in the future, and it is easy to break tiles (for example, when you install water heaters, mirrors, pendants, cabinets and bathroom cabinets);
4, empty drum will lead to water accumulation on the bathroom floor and rot and stink (this is the reason why many people have odor in the bathroom);
5. The hollowing not only reflects the appearance, but also reflects the serious problems that may exist in the construction technology (such as no galling before bricklaying).
Extended data
cause
atypia
Wall plastering at the grass-roots level is not handled as required or grass-roots garbage is not cleaned up. Before laying ceramic tiles, check whether the plastering on the base wall meets the requirements, and the sundries, dust and dirt on the base wall must be removed; When the shop is stuck, the back of the ceramic tile shall be leveled with cement mortar or 107 cement slurry, and tapped with a hammer handle or a soft hammer to make the cement slurry fill the back of the ceramic tile and make the ceramic tile firmly combined with the wall foundation.
Not immersed in water
Not soaked or not soaked enough before paving. Tiles (especially glazed tiles) should be soaked in water for more than 2 hours before pasting. After the ceramic tile fully absorbs water, it should be taken out to dry in the shade or wiped with water. If the brick body is not saturated with water, it will absorb the water in the mortar prematurely, which will lead to the shrinkage and hollowing of the mortar and affect the bond strength.
less than
When laying tiles, the mortar is not full or the tiles are not tapped and squeezed tightly. This is a case of cutting corners: to save cement mortar, or to save time. There is also a situation that often occurs when contracting for materials, that is, the quality of tiles is too poor, and the tiles are afraid of being smashed.
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