Granite Features
Jan 25, 2020
Granite has a dense structure, high compressive strength, low water absorption, large surface hardness, good chemical stability and strong durability, but poor fire resistance.
Granite has fine-grained, medium-grained, coarse-grained granular structure, or plaque-like structure, with uniform and fine particles, small gaps (porosity is generally 0.3% ~ 0.7%), and water absorption is not high (water absorption is generally 0.15 % ~ 0.46%), with good frost resistance.
Granite has a high hardness, its Mohs hardness is about 6, its density is between 2.63 g / cm3 and 2.75 g / cm3, and its compressive strength is 100-300MPa. Among them, fine-grained granite can be as high as 300MPa or more, and its bending strength is generally between 10 ~ 30Mpa. Granite is often produced in the form of rock foundations, rock strains, and rock blocks, and is controlled by regional geotectonics. It is generally large in scale and widely distributed, so it is easy to mine, it is easy to produce large materials, and its joints develop regularly Conducive to mining regular shaped stones.
Granite has a high rate of waste and can be processed in various ways. And granite is not easy to weather, and can be used as outdoor decorative stone. The texture of granite is uniform. Although the color is mainly light-colored, it is also very rich in red, white, yellow, green, black, purple, brown, beige, blue, etc., and its color changes relatively little, which is suitable for large Use of area.