Fineness Test on Cement

Fineness Test on Cement is carried out to check proper grinding of cement. Fineness of cement particles may be determined either by sieve test or by permeability apparatus test.

In sieve test, the cement weighing 100 gm is taken and it is continuously passed for 15 minutes through standard BIS sieve no. 9. The residue is then weighed and this weight should not be more than 10 per cent of original weight.

In permeability apparatus test, specific surface area of cement particles is calculated. This test is better than sieve test and it gives an idea of uniformity of fineness. The specific surface acts as a measure of the frequency of particles of age size. The specific surface of cement should not be less than 2250 cm2/gm.

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