What is the grain size of 05 gravel

05 stone is a common sand and gravel product specification, the market demand is relatively large. Then exactly how big is the grain size of stone under this specification?

05 stone is the finer stone, particle size in 0-5mm, belongs to the sand. 05 stone according to the modulus of fineness is divided into coarse sand, medium sand, fine sand and ultra-fine sand four specifications:

Coarse sand: fineness modulus of 3.7-3.1, the average particle size of 0.5mm or more;

Medium sand: fineness modulus of 3.0-2.3, average particle size of 0.5-0.35mm;

Fine sand: fineness modulus of 2.2-1.6, average particle size of 0.35-0.25mm;

Extra fine sand: fineness modulus of 1.5-0.7, average particle size below 0.25mm.

05 stone accounts for 70%-80% of the total volume of concrete, which can reduce the shrinkage of concrete, save the amount of cement, but also through the selection of appropriate aggregate varieties or aggregate grading, thus changing the performance of concrete, so it is very popular in the construction industry.

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