### What is Fineness Modulus of Sand (Fine Aggregate) and ...

Calculation of fineness modulus of Sand. Therefore, fineness modulus of aggregate = (cumulative % retained) / 100 = (275/100) = Fineness modulus of fine aggregate is It means the average value of aggregate is in between the 2 nd sieve and 3 rd sieve. It means the average aggregate size is in between to as shown in below figure.