Procedure:

• i) The test sample is dried to a constant weight at a temperature of 110 + 5oC and weighed.
• ii) The sample is sieved by using a set of IS Sieves.
• iii) On completion of sieving, the material on each sieve is weighed.
• iv) Cumulative weight passing through each sieve is calculated as a percentage of the total sample weight.
• v) Fineness modulus is obtained by adding cumulative percentage of aggregates retained on each sieve and dividing the sum by 100.