Selection techniques:
1. The appearance color and luster should be uniform, and the surface glossiness and flatness should be better (except for special processes), especially for polished floor tiles. The higher the glossiness, the more sophisticated the polishing process, the higher the relative hardness, thus the lower the water absorption and the higher the * * * degree.
2. The ability to prevent pollution is good. Drop one or two drops of ink or colored water on the surface of the ceramic tile, and wipe it off with a wet rag half an hour later. If there are obvious marks left, it indicates that it is easy to leak dirt; If there is basically no trace left, it proves that it has good anti pollution ability.
3. The size deviation shall not be too large. That is, the four bricks shall be put together in a regular manner without obvious dislocation. The products with size error greater than 0.5MM and flatness greater than 0.1MM will not only increase the difficulty of construction, but also have poor effect after decoration and cannot be used in the project.
4. The water absorption shall meet the requirements. The lower the water absorption is, the higher the density of the product is, and the more difficult it is to penetrate. Generally, the colored ceramic tiles shall not exceed 10%; Unglazed porcelain tiles (including polished tiles) shall not exceed 0.5%; Glazed porcelain tiles shall not exceed 1%.
5. Check whether the floor tiles are qualified. The quality of floor tile decoration and tiling mainly depends on whether the height of the joint between tiles is greater than 0.5mm, whether the flatness of the overall surface is greater than 2mm within 2m, and whether the straightness of the joint is more than 3mm within 5m. All those exceeding the above range are unqualified for decoration quality.
6. Listen to the sound of ceramic tiles: how to distinguish the internal quality of ceramic tiles? You can't see it by looking, but you can distinguish it from the sound by knocking.
         
|
