Compound artificial sand

The present invention belongs to the technical field of sand, the sand is specifically formulated composite using natural cooling blast furnace slag. The composite sand, consisting of natural cooling blast furnace slag and limestone tailings, sand through the composite after a certain mixing ratio made of good quality, can adapt to the needs Strength Concrete, formulated to compensate for ordinary concrete sand disadvantage of easy bleeding, reduced bleeding and segregation, small slump loss, and has good bonding properties, workability of concrete is greatly improved. In addition, the effective use of limestone and blast furnace slag tailings, reducing pressure on the environment, turning waste into treasure.