Question

Which of the following tests is NOT used for testing fineness of cement?
1. Sieve method
2. Wagner Turbidimeter method
3. Air permeability method
4. Density bottle method

Answer 1

Correct Answer - Option 4 : Density bottle method

Fineness of cement:

• The fineness of cement is a measure of the size of particles of cement and is expressed in terms of the specific surface area of cement. The fineness of cement is measured as the % weight retained on a 90µm IS sieve over the total weight of the sample.
• It is measured by using the sieve analysis test, Wagner Turbidimeter method and air permeability test.
• The fineness of cement affects hydration rate hence the rate of strength gain.