花岗岩饰面因其抗风化,耐腐蚀能力强,耐用年限长,且外观美观大方,多用于一些大型公共建筑的外饰面。然而,现在有不少花岗石外饰面墙面不同程度地出现“泪痕”、“眼镜”、斑疤等难以消除的质量通病,严重影响其高雅的装饰效果。其主要原因是:1.花岗岩石属天然建材,匀质性差。同一块块材其蔬松密实程度相差较大,板材本身有很多肉 Due to its weathering resistance, strong corrosion resistance, long service life, and beautiful appearance, granite finishes are used in the exterior of some large public buildings. However, there are a lot of granite exterior wall coverings that have different levels of quality, such as “tears”,“glasses”, and spot defects, which seriously affect their elegant decorative effect. The main reasons are: 1. Granite is a natural building material with poor homogeneity. The same block has a large difference in the density of the vegetables, and the plate itself has a lot of meat.