Author：Huada Quarrying Machine FROM：Stone quarry machine manufacturer TIME：2021-10-23
Granite is an igneous rock formed by the condensation of magma below the surface, mainly composed of feldspar and quartz. It is often used for wall decoration of high-end buildings.
Granite has compact internal structure, high compressive strength, low water absorption (water absorption is generally 0.15% ~ 0.46%), high surface hardness and good chemical stability; The durability is relatively strong, but the fire resistance is poor.
Granite generally presents fine, medium and coarse granular structure or porphyry structure. Its particles are uniform and fine, with small gap (porosity is generally 0.3% ~ 0.7%), and has good frost resistance.
Granite has high hardness, its Mohs hardness is about 6, its density is between 2.63g/cm3 and 2.75g/cm3, its compressive strength is 100-300mpa, of which fine-grained granite can be more than 300mpa, and its bending strength is generally 10 ~ 30MPa.
Granite has a high yield, can be processed, and the plate has good splicing. In addition, granite is not easy to be weathered and can be used as outdoor decorative stone.