What are the advantages of natural stone?

Natural stone has good fire resistance \r Due to different types of stone, the fire resistance of stone is also different. But overall, the fire resistance of stone is still very good. Stones also expand and contract. Stone also has the characteristics of thermal expansion and cold contraction, but the cooling shrinkage effect of stone after heating is not as good as before. Natural stone has good frost resistance. When it freezes at -20℃, the water in the pores expands to one tenth of its original volume. If the rock can't resist the force generated by this expansion, it will be destroyed. The compressive strength of natural stone is large, and the compressive strength of stone will be different due to mineral composition, crystal thickness, uniformity of cementing material, load area, load and cleavage angle and other factors. Other things being equal, dense materials with fine grains are usually bonded to each other and have higher strength. No deformation: after long-term natural aging, the rock has uniform structure, small linear expansion coefficient, complete disappearance of internal stress and no deformation.

High hardness: good rigidity, high hardness, strong wear resistance and small temperature deformation. Long service life: no need to grease, not easy to stick dust, convenient and simple maintenance, long service life. There will be no scratches, and it will not stop at constant temperature, and its original physical properties can be maintained at normal temperature. Non-magnetization: it can move smoothly during measurement, without stagnation and humidity, and the plane balance is good. Physical properties: specific gravity 2970-3070kg/m3, compressive strength 2500-2600kg/cm2, elastic coefficient1.3-1.5×106kg/cm2, water absorption. When many building materials lose their original features due to a long history, natural stone still maintains its true colors and elegant demeanor. Many natural stones, like fine wine, can also show their "elegance and nobility" with the passage of time. Cleaning natural stone is very convenient, simple and low cost. Even a stone floor with a history of hundreds of years can be easily polished again to restore its original color. The service life of natural stone is very long, and correctly designed and built natural stone buildings can be used for thousands of years.