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天然花岗石作为建筑材料一直被广泛地应用于室内外饰面装修。花岗石的形成过程复杂,品质受地质条件限制,因此,我国各地出产的天然花岗石板材的出材率都不高,造成很大的资源浪费,其中色斑超标是主要的原因之一。现行国家建材行业规范对花岗石外观要求比较高,对色斑的要求见表1。
Natural granite as a building material has been widely used in indoor and outdoor decoration. The formation process of granite is complex and its quality is limited by geological conditions. Therefore, the output rate of natural granite slabs produced in various parts of China is not high, resulting in a great waste of resources, of which the main reason is that the stain exceeds the standard. . The current state of the national building materials industry requires a relatively high appearance of granite, and the requirements for stains are shown in Table 1.