天然洞石具有较高的吸水采用防水涂料使其吸水率降至1%以下。云仕美人造无机洞石可以达到0.6以下的吸水率。

石材幕墙采用注胶板缝，石板只能做外表面防水；采用开板缝时，石材六面防水。云仕美人造无机洞石的表面处理非常严格。强外挂和内墙挂有完整的解决方案。处理后的表面可以与建筑物的使用寿命相同。如果不损坏，它仍然具有使用价值。到时候，防水处理是一个非常简单的过程。

天然洞石孔洞大，孔洞多，应封孔。防水处理应在所有槽、孔加工、清洗、干燥后进行。人造无机洞石的孔洞可任意调整，要大就大，要小就小，要密就密，要少就少。

结论：幕墙工程采用天然洞石，安全是重中之重。决策之前要慎重考虑。首先，进行技术论证和可行性分析；充分了解所选石材的材质；然后仔细设计，尽量减少面板尺寸，尽量避免长板；后期实施时，应使用机械进行板孔和槽加工；运输安装时避免撞击石板；仔细安装面板。总之，要采取各种综合措施，防止安全隐患，防止事后付出高昂的代价。

Gray terrazzo is a classic terrazzo - the background color is gray, with black, white and various gray gravel textures on it

Shop prefabricated inorganic terrazzo to brighten your eyes when you enter the door; Cleanliness is the first impression, and comfort is a long-term experience; Do not publicize, do not dominate, quietly create a sense of comfort, there is no sense of existence, but there is an indelible concrete existence.

The surface hardness reaches grade 5-7, which is close to the surface of high hardness granite and has better wear resistance. Anti slip and wear-resistant. Because it is ground with crushed stone cement, it has good anti-skid, wear resistance and bearing capacity.

Linear thermal expansion coefficient: 0.5 × 10-1℃C-1
La < 0.1i < 0.1 classification: class a radioactivity
Bulk density: 2.52g/cm2
Mohs hardness: 4.5
Water absorption: 0.22%
Gloss: 50-100
Bending strength: 8.4mpa
Compressive strength: 80MPa
Bending strength: 12.4MPa