I found that the coefficients of the stone sprinkle good should have a value of the Coefficient of uniformity (Cu) in the range of 2.3-2.6 in order to reduce the fracture of rocks to go through in the long run.
Found that the coefficient of the ballast should be the value of Coefficient of uniformity (Cu) in the range of 2.3-2.6 to reduce the fracture of the stone when it has been used for a long time.
Found that the coefficient of rock and the value of Coefficient should of uniformity (Cu) in the 2.3-2.6 to reduce the fracture of rocks when through the use of in the long run.