According to the characteristic of the particle size constitute to calculate the specific surface of the natural aggregate

In this paper the characteristic of the particle size constitute of the natural aggregate is analysed and based on this the formula for calculating the specific surface of aggregate is derived. By checking against L. N. Adwards' method of calculating the specific surface of aggregate by the counted number of particles of aggregate in one gram of aggregate, it is seen that the result from this formula approaches more closely to that of Adwards' than that of any other's.