1. The cement grade for tiling is higher
During the production process of ceramic tiles, the cement grade used is relatively high, or pure cement is used, because when the cement mortar sets together, the shrinkage ratio of the cement mortar during the setting process is relatively large. After the ceramic tiles are laid, the water is absorbed by the cement mortar, resulting in low water content of the ceramic tiles themselves and the occurrence of cracks. Solution: Usually, the proportion of cement mortar used for tiling is 1:2-3 (volume ratio) for mixing. A suitable proportion can prevent the occurrence of cracks.
2. Judging based on the condition of cracks
If the cracks appear regularly and crack together with the body, it may be caused by water leakage from the water pipe inside the wall, or tensile stress caused by structural changes in the paving wall, exceeding the mechanical strength of the brick, or excessive knocking force during the paving. Useful mortar and wall tiles are prone to thermal expansion and contraction in winter. Causing uneven heating and cooling. The upper and lower materials have different degrees of expansion and contraction, so this phenomenon may occur. This leads to cracking of the ceramic tiles.
3. The issue of water absorption of ceramic tiles themselves
The water absorption rate of ceramic tiles is relatively high. Before construction, the water on the ground is absorbed by the tiles, and after laying. Continue to absorb water and expand. The solid extrusion of the brick surface results in insufficient maintenance, making the mortar unable to have a good bonding effect.
Solution: The above problems can be avoided by paying attention to the tiling techniques when laying tiles. However, if it is a quality issue with the tiles themselves, efforts need to be made during the selection process. We can distinguish the quality of ceramic tiles by listening, looking, touching, and other methods. When tapping on the surface of ceramic tiles, the clear and crisp sound indicates a high density and hardness of the tiles. Secondly, to check the glossiness and flatness of the ceramic tile surface, a hard object can be used to scrape it. If any marks are left, it indicates that the ceramic tile glaze is poor. Finally, you can feel the quality of the tiles by touching them to see if there are any unevenness on the surface of the tiles.
4. Leftover issues in cutting ceramic tiles
In general, cracking of tiles after cutting is a common problem, which belongs to the cracking at the cutting point of floor tiles. Compared to whole bricks, the overall strength of ceramic tiles after cutting will be much reduced, so they are more prone to cracking in the later stage. The laying of ceramic tiles is crucial. If the force of striking the tiles is not consistent during laying, the adhesion between the tiles and the ground will also be inconsistent. Additionally, the tensile force of cement increases, which can easily lead to cracking of the tiles. This is difficult to detect during decoration construction. At the beginning of decoration, there will only be some small fine lines, and over time, some cracks will appear. Choose a branded decoration company, and the owner can directly contact the decoration company to have them replace the tiles.
5、 Reasons and solutions for hollowing in ceramic tiles
The hollowing of ceramic tiles is largely due to the lack of moisturizing maintenance after installation. Also, the surface of the tiles is not cleaned properly or the humidity during watering is insufficient. The application of cement mortar is not uniform enough, or it is caused by the long application time, which leads to the cement mortar being ineffective in bonding, resulting in hollowing of the surface layer and base layer of the plate.
Wet curing should be carried out within 24 hours after tiling, i.e. towards the ground.