What is the fineness modulus of sand vibrating sieve separatorThe Fineness Modulus FM is an index number which is roughly proportional to the average size of the particles in an aggregate sample It is obtained by adding the cumulative percentages coarser than each of the standard sieves used for segregating sand and dividing the cumulative percentage by 100 **-what is the fineness modulus of natural sand-**,fineness modulus of sand vibrating sieve separatorEffect of Fineness of Sand on the Cost and Properties of Concrete As fineness modulus of sand changes from 2 0 to 2 5 there is an increase in compressive strength from 43 07 to 49 00 MPa i e strength increases by 14% …… **Get More**