The foundation of most of the ground nowadays is concrete. The exposed concrete ground is not only unattractive, but also will be damaged to varying degrees after a period of use. In order to increase the life of its floor, people will put a coat on its appearance, but this can only increase the short life. It is not difficult to solve these problems, because the technology of concrete polishing has emerged. It improves the performance of concrete through the internal reaction of concrete silicon hardener and cement, so that the problem of dust and sand damage will not occur on the ground. Sanding occupies a very important part in the concrete polishing construction. Let's talk about the sanding skills below. Grinding speed depends on the situation Slowing down the speed of the grinder makes the tool work longer on the target. During the removal work, the tool may lift and skip the surface during operation, reducing the construction efficiency. This problem is exacerbated if the machine runs too fast. If your machine runs at a higher speed, you can speed up the sanding process, but it often also results in more rework and lower satisfaction. So reducing the speed of sanding is a wise action. In addition, slowing down the operator can provide a good buffer time. For a few millimeters of abrasive removal, the situation is reversed. In this case it would be better to require the operator to move at a faster speed. Continued at a slow rate will waste time and effort and may result in the removal of good concrete. Densified soft concrete Densification is often performed before sanding, especially in the south and warm climates. Soft concrete wears out diamond grinders and is also very detrimental to vacuum hoses and filters. Sodium type concrete seal curing agent can be used on soft concrete floor until the floor is waterproof. This helps to stabilize the concrete floor and make it more compact, which is conducive to the application of the tool. It also helps to eliminate machine marks on the floor or "swell" that occurs on the floor. Use the right lubricant to cool the tool When using a scraper tool on a sander or a carbide tool on a ripper, spray a mild lubricant on the tool. This will help the tool cool down and reduce the amount of material on the tool. Don't worry about the lubricant being transferred to the floor, because its viscosity is not high enough to cause stains on the floor. The use of polished concrete technology can greatly improve the damage of concrete. Mastering the sanding technique during the construction process can get more satisfactory results.