Coloured sand in coloured sand epoxy floor refers to coloured quartz sand, not other types of sand. The reason why quartz sand is chosen is that quartz raw materials come from a wide range of sources and have high mineral hardness, which makes the raw materials and quality of the floor have a fundamental guarantee. Quartz sand is colorless or white. Through new dyeing technology, quartz sand particles can be processed into colorful sand grains with rich color. With the mixed decorative design of colored sand, the floor is endowed with colorful aesthetic feeling. Quartz sand should also be round or spherical granular, so as to facilitate the free sliding between particles in the construction process, so that the sand can be as close as possible, "the most compact accumulation", so that the epoxy color sand layer is fully dense, to ensure the floor excellent pressure resistance and wear resistance. In addition, when the epoxy coloured sand layer is fully compacted, the amount of resin used in the surface layer can be saved and the cost can be reduced. 选择好的彩色石英砂对彩砂地坪的高质量至关重要，过去高质量彩砂主要靠进口，一些外资企业直接从国外购得。但是，现在国内已有厂家能生产高品质彩色石英砂，如北京宝莲纳公司生产的彩砂，其色泽、颗粒圆度、粒度配比及耐化学性等指标均与国外产品相当，质量稳定可靠，不仅价格较低，而且供货周期短、售后服务好，已为外资公司所采用或为指定用砂。
Choosing good color quartz sand is very important to the quality of color sand floor. In the past, high quality color sand was mainly imported, and some foreign-funded enterprises bought it directly from abroad. However, now domestic manufacturers can produce high-quality color quartz sand, such as the color sand produced by Beijing Baolianna Company. Its color, particle roundness, particle size ratio and chemical resistance are comparable to those of foreign products. The quality is stable and reliable. Not only the price is low, but also the supply cycle is short and the after-sales service is good. It has become a foreign capital. Sand used or designated by the company.
The price of coloured sand epoxy flooring is higher than that of self-leveling epoxy flooring, as in the past and now. The basic reason is that the material cost is higher and the construction technology is more complex. In order to reduce the cost, some companies in South China have tried to replace coloured quartz sand with coloured sand made from natural stone waste (which contains carbonate rock), but the quality of coloured sand floor can not be guaranteed. First of all, the wear resistance is not qualified. This kind of natural coloured sand has complex composition and different hardness. It is generally suitable for wall decoration, but not for floor decoration. Now there are poor quality color quartz sands on the market. The grains are not rounded, there are edges and corners, the dyeing is not uniform, the color bonding is not strong, and the color fades easily. It is the product of mixing ordinary quartz sands with some color coatings. The manufacturing process is simple, not professional, and the quality is easy to be problematic. Please pay attention to the construction units.
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