The artificial sand is rock particles which are less than 5 mm (excluding soft rock and mantle rock particles) manufactured by sand-making equipments.It is characterized by controllable quality,good stability and hardness,and can meet the requirements of physical performance index and durability index such as freeze-thaw resistance and chloride ion permeability for port & waterway engineering concrete adopted in Northern China.In the actual engineering,it shows a satisfactory application effect.Since natural sand is in growing shortage and quality decline,to replace or partly replace the natural sand by the artificial sand can alleviate the adverse impact duo to the lack of sand resource on the engineering schedule,cost,and quality.