I.Solid brickabsorption rate standards
"Absorption rate" refers to the weight of water absorbed by a dry brick divided by the weight of the brick itself. It indicates the adhesion and penetration capability of tiles, and reflects the amount of open pores on the brick surface. The absorption rate is determined according to the national standard GB4100-2015 "Ceramic Tiles" for solid bricks, and the absorption rate standard for solid bricks is less than or equal to 0.5%.
Two. How to test the water absorption rate of through-body bricks.
When selecting solid bricks, how can you test the water absorption rate? Here are a few methods to help you determine the water absorption rate of the bricks:
1、Impact test method
Tap on ceramic tiles to assess their quality. A clear, ringing sound indicates good vitrification and high density. A dull sound suggests low density and high water absorption, which indicates poor quality.
2、Water Penetration Test
To check the water absorption of tiles, place a small amount of water on the back of the tile and wait for about 5 minutes. Observe the water absorption condition. The water absorption level of the tile determines whether black grout lines or mold spots will appear during use. Tiles with slower water absorption are preferable. Consumers can also increase the water absorption "test" on the sides of the tiles.
Three. Is the water absorption rate of whole brick high or low?
- From the perspective of water absorption rate alone, bricks with a lower water absorption rate are naturally preferable. In normal circumstances, bricks with a lower water absorption rate are better, indicating that the tiles have a higher density and strength, are less prone to expansion, and have high stability. They also absorb less dirt, making them easier to clean. Tiles with a high water absorption rate are prone to expansion and cracking, leading to tile detachment and voids.
However, for wall tiles, a certain degree of water absorption is still required to ensure that, after being laid with cement mortar, the tile's porosity is reduced, and the laying is secure.