>>>Maintenance and cleaning of tiles
Tiles play an important role in home decoration. Tiles are absolutely irreplaceable in the decoration of kitchens and bathrooms. There will be formaldehyde and other harmful substances in the inferior wooden floor, and the tiles will also have radioactive material, which is not “absolute health and safetyâ€. The reporter found that in Zhengzhou ceramics market, especially in the distribution center of Putian Ceramics, the price of ceramic tile is very different, and owners who do not know the standard of ceramic tile can easily lose the low price and then turn the home into a gathering place of harmful radioactive materials.
â— buy tiles distinguish "A, B, C" category
In several large ceramics markets in Zhengzhou, the reporter observed some owners who bought tiles and found that the criteria for selecting tiles were: brand, color style, price, and anti-fouling ability. They rarely asked about the radioactivity of tiles. If the owners do not take the initiative to ask questions about radiation, shopping guides will not actively introduce radiation standards.
Ms. Wu, a tile brand salesperson in Guangdong, told reporters that brand tiles will conduct training on the radioactivity knowledge of the tiles, including the precautionary measures of their products in this respect. In addition, all tiles in the brand store should have quality provided by the manufacturer. Test reports indicate the use of various types of tiles.
According to the revised “Code for Indoor Environmental Pollution Control of Civil Construction Projectsâ€, the radioactivity of interior decorative tiles should be tested and controlled. The test results are divided into three categories: A, B, and C. Only Class A standard tiles can be used for residential interior decoration.
The reporter carefully observed the appearance of the three types of tiles A, B, and C, and it is difficult to see the difference. According to industry insiders, the current market, A, B, C three types of tiles vary greatly in price, ranging from 2 yuan to 10 yuan per block, the larger tile area, the greater the price difference. For consumers who do not understand the market, it is probable that because of the price factor, they bought B and C ceramic tiles that are not suitable for interior decoration.
In addition, the owner invited the decoration team to work on the construction of materials and materials. The owner could not understand the quality of the craft ceramics and architectural ceramics used in the interior, and opened the door to the interior of the B and C ceramic tiles. “In case these ceramic tiles are not qualified, those who live in them may be exposed to radioactive materials for a long time.†Guo Zheng, Zhengzhou star decoration designer told reporters that due to fierce market competition, at present, some of the Zhengzhou home improvement market, Informal decoration companies and small guerrillas have adopted low-cost strategies to create ideas on the decoration materials. They use Class B and C tiles to impersonate A-type tiles for interior decoration, which can save costs by 20% to 40%. “So, our designers often remind owners that renovation cannot use price as the main measure.â€
>>> Tile construction knowledge
â— Sources of tile radiation <br> Many homeowners believe that tiles do not need adhesives such as glue, unlike wood flooring, and should have no indoor pollution.
Wu Yuanjiang, who has been engaged in ceramics business for more than ten years in Zhengzhou, told reporters that in the production process of ceramic tiles, in order to increase the surface finish, facilitate cleaning and decontamination, and avoid corrosion, manufacturers have applied a layer of “glaze†on the surface (so the tiles Also known as glazed tiles), this is a ceramic pigment in which zircon sand is added as an opacifier, and the content of natural radionuclides in zircon sand is generally high.
One of the ways that ceramic tile radiation to the human body comes from the radiation of raw materials, and the second is from the (air winter) elemental radiation to the human body. In addition, the glazed fabric dust that has exceeded the service life or artificially damaged tiles is inhaled and will endanger. health. In all the tiles, the ultra-white bricks in the polished tiles are more radiant, and the precipitation rate of the radioactive elements (gas winter) on the surface of the colored glazed tiles is higher than that of ordinary tiles.
Wu boss reminded that when buying tiles, pay attention to the following points: to the formal building materials market to buy brand products; ask the distributors for radioactivity test reports, observe the test results category (A best, B center, C worst); In order to prevent the indoor radioactive material content is too high, it is advisable to ask a professional agency to carry out a radioactive test prior to arrival.
Tips for buying tiles
According to industry experts, ceramic tiles of good quality generally pay more attention to safety, and radiation will be controlled within the allowable range of the country. When you buy tiles, you can identify tiles by one, two, three, and four.
Test weight: The quality of a good tile component is relatively heavy. Than the specifications: good quality tile size uniform, uniform thickness, no corner defects, no bumps and other defects warp angle, side length error is not more than 0.2 cm to 0.3 cm, the thickness error does not exceed 0.1 cm.
Look at the surface: The glazed ceramic tile is uniform, smooth, smooth, bright, and uniform in color; if there are particles, not clean, different shades of color, uneven thickness or even uneven, cloudy clouds are defective. The tiles of good quality have the same color and there is no color cast.
Listen to the sound: With the left thumb, forefinger and middle finger sandwiching the corner of the tile, it is easy to hang down and knock with your hand. The crisper the sound, the higher the porcelainity and the better the quality.
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