Some radioactive substances in building materials will cause damage to hematopoietic organs, nervous system, reproductive system and digestive system of human body. Studies have proved that the radioactivity of building decoration materials exceeds the standard, which directly affects the health of consumers, especially children, the elderly and pregnant women, damages the human immune system and induces chronic radiation sickness similar to leukemia. Ceramic tile is one of the main decorative materials. Director Guangsheng Song of the Indoor Environment Monitoring Committee of China Interior Decoration Association reminded us that we should pay attention to two aspects when buying and using ceramic tiles.
First of all, raw materials and processing technology determine the quality of ceramic tiles, so when purchasing ceramic tiles, we should pay attention to:
1, check the certificate. When buying stone and building ceramics products in the building materials market, you should ask the dealer for the radioactive test report of the products, and pay attention to whether the report is original, whether the name of the merchant in the report is consistent with the name of the purchased product, and the category of the test results.
2. Try the weight. Good quality tiles are heavier and stronger. This is mainly due to the choice and proportion of raw materials. The better the tile, the greater the mechanical pressure during processing, so the heavier the weight.
3. Compare specifications. Good quality floor tiles have uniform specifications and sizes, uniform thickness, no edge defects, no concave-convex angles and other defects. The side length error is not more than 0.2 ~ 0.3 cm, and the thickness error is not more than 0.65438 0 cm.
4. Look at the "face". The better the tile, the smoother the surface. If the glaze of ceramic tile is uniform, smooth, bright and consistent in color, it is the top grade; If there are particles on the surface of ceramic tile, it is not smooth, the color is different, the thickness is uneven or even uneven, and it is a cloud-like product.
5. Emphasize color: the tiles with good quality have the same color and no color cast. The main reason is that ceramic tiles have strong stability due to the use of good raw materials and scientific proportion. So when buying ceramic tiles, we must pay attention to whether its color mechanism is consistent.
6 Listen to the sound. Hold a corner of the tile with your left thumb, forefinger and middle finger and hang it down easily. Click the middle and lower part of the tile with your right index finger. If the voice is crisp and pleasant, it is the top grade. If the sound is dull and stagnant, it is the bottom level.
At the same time, in order to reduce the radioactive pollution of ceramic tiles, the following aspects should be paid attention to when using:
1. Decorative materials should be reasonably matched and used when decorating office buildings and families. It is best not to use tiles in a large area in the room.
2. In order to prevent the indoor radioactive material from being too high, it is best to check the radioactive background before the renovation of the new house, which is helpful for the selection of ceramic tile varieties.
3. For the ceramic tile products for which there is no test report, the best way is to ask experts to conduct radioactive testing with advanced instruments before deciding whether to buy them.
4. The decorated room can be inspected by experts on the spot. If the radioactivity index is too high, measures must be taken to replace it immediately. If the standard is not high, there is no need to dismantle it. Keep indoor ventilation regularly or choose an effective air purification device.