In order to make the quality standard of stone and ceramic facing care truly understood, understood and understood by the majority of constructors and users, the following points are taken as the standard for the time being.
(1) The abrasion resistance of stone is expressed by "degree". Generally, the abrasion resistance applied to the floor should be at least 3-4 degrees to be qualified. The stone facing can be tested on the site. At the gate and main passage with dense traffic, six periods of time are used to test and collect data, namely: 3 days, 7 days, 15 days, 30 days, 45 days and 60 days. During these 6 periods, no nursing can be done. However, it is very important to use a single eraser with a cushion for cleaning. Three days without effect (no light) belongs to waste products, seven days without effect (no light) belongs to inferior products, 15 days without effect (no light) belongs to unqualified products, 30 days without effect (no light) belongs to qualified products, 45 days without effect (no light) belongs to excellent products, 60 days without effect (no light) belongs to high-quality products, Those that still have effect in 90 days are super quality products.
(2) The permeability of stone facing can be tested on site by fixed-point water soaking method. The method is as follows: use a transparent cylinder with a height of 40cm and a diameter of 10cm, place it on the ground, close to the ground interface, seal the side seam with soft silica gel, then put 20cm of clear water in the cylinder, cover it, soak it for 15-30 minutes, then take away the test object to see if it can soak in the watermark, and then wait 0.5-2 hours for natural drying, If the original appearance can be restored to dryness without watermark, the product is qualified, that is, it can achieve double-sided breathability. This effect can effectively control the possibility of stone pathological changes, and at the same time, the stone and the cement buildings below can be properly and effectively maintained. This is very important to prevent early pulverization of buildings due to water loss. On the contrary, if the water can not soak in or enter, and the water can not come out or never come out within the specified time, it is a nonconforming product. Because the finishing coating is impermeable, it is easy to cause stone and ceramic lesions, and more seriously, the building can not be cured by water vapor, which accelerates the building pulverization, and the consequences will be difficult to estimate. This is a low-quality nonconforming product.
(3) The washing resistance of stone can be tested on the site with the method of washing and wiping by a floor washer. The testing tool is a single floor washer. The testing materials are tap water, neutral detergent, solvent (such as gasoline, banana water, etc.). The testing time is 5 minutes. Detection method: 1 Use a single scrubber to scrub with tap water. 2 Soak with a single eraser and neutral detergent. 3 Soak with a single eraser and neutral detergent solvent. The first one can pass without changing the original appearance and is qualified. The second kind can pass without changing the original appearance, which is fine products. The third type can pass without changing the appearance, and is a high-quality product. If the first test can not be passed, it belongs to low-quality nonconforming products, which can not be used on the ground. Washable stone and ceramic facing are very necessary and necessary in real life, and are the requirements of modern life.
(4) The temperature resistance of stone can be checked by using a small amount of banana water, gasoline, alcohol, firewood, paper scraps, etc. on site. The burning time is 1-5 minutes. (Be sure to be prepared for fire fighting) The temperature should be above 300 degrees and below 600 degrees. After the barbecue, it should be mopped and checked with clean water. If there is no change to the original appearance (including clarity and cleanliness), it is qualified. If there is change (including clarity and cleanliness), it is unqualified.
(5) The anti-skid property of stone should use a static friction coefficient tester (slip meter). If there is no (slip meter), it can be detected on the site by dry and wet methods. When walking on the surface of stone or ceramic tile, you can feel whether there is obvious foot sucking and anti-skid effect by turning your foot. You can also put clear water on the stone or ceramic tile, and then walk on the surface, feel the anti-skid effect with your feet, and summarize opinions from various parties to determine the anti-skid property.
(6) For the anti pollution of stone materials, it is required to use oily strokes on the site, or scorch the surface, and then mop with clean water to check whether there are traces left. If there are traces left after mopping with clean water, the stone materials are inferior and unqualified products. After mopping, the stone materials can maintain the original effect, and the stone materials that do not leave any traces and can maintain high definition are high-quality and qualified products.
(7) The flatness of stone should be tested by high-precision laser displacement sensor, or it can be determined by visual inspection based on the opinions of many parties on the site. Because the flatness is relative, the overall effect is qualified with few waves, otherwise it is unqualified.
(8) The sharpness of stone should be measured with a sharimeter or a densitometer. The higher the surface density of stone and ceramics, the higher the sharpness. The sharpness can also be identified by summarizing opinions from various parties. The high definition can be measured visually. The overall surface fully reflects the glass phase, and the high definition should be established. There is no haze, orange peel, and any pitting. It can fully reflect the indoor ceiling, chandelier The reflection effect can be reflected by the barrel lamp and the filament. This is clarity, otherwise it cannot be counted as clarity. This is the standard for visual inspection
(9) Stone coverage, which can also be understood as fullness or thickness, should be visually inspected on the site to see whether the pinholes and small cracks on the ground are completely covered and completely covered into a plane. If the fullness and thickness can be reached, it is a high-quality product. If the small cracks can still be seen by visual inspection, but can not be seen by the pinholes, if the fullness and thickness are obviously insufficient, it is a qualified product. If the pinholes and small cracks can still be seen, it is not a fullness, It's too thick. It's inferior and unqualified.
The quality of stone must be: bright but not shiny, moist but not slippery, bright and clear, high definition, low reflectivity, resistance to light pollution, green and environmental protection, listening to figures and seeing effects, speaking with eyes.