The granite structure is compact, the compressive strength is high, the water absorption rate is low, the surface hardness is big, the chemical stability is good, the durability is strong, but the fire resistance is poor.
Granite is fine grain, medium grain, coarse grain of granular structure, or like the mottled structure, its particle evenly fine, gap small (porosity is generally 0.3%~0.7%), bibulous rate is not high (water absorption rate is generally 0.15%~0.46%), has a good frost resistance.
The hardness of granite is high, its hardness is about 6, its density is between 2.63g/cm3 to 2.75 $literal, its compressive strength is in 100-300mpa, in which fine-grained granite can be up to 300MPa above, the flexural strength is generally in 10~30mpa. Granite is often produced in the form of rock, rock, rock, etc., and is controlled by regional geotectonic structure, general scale is relatively large, distribution is relatively wide, so the mining is convenient, easy to Aniseed, and its joint development is regular, conducive to mining shape rules of stone.
Granite into a high rate, can carry out a variety of processing, plate can be spelled well. Granite is not easy to weather, can be used for outdoor decorative stone. Granite texture uniformity, although the color is mainly light, but also very rich in red, white, yellow, green, black, purple, brown, beige, blue and so on, and its relatively small color changes, suitable for large-area use.