Question

By which of the following tests, fineness of cement can be determined?

• A. permeability test
• B. soundness test
• C. vicat apparatus test
• D. compression test

Answer 1

The correct option is A permeability test

Ans. (a) : Fineness Test- This test is conducted to check proper grinding of cement.
(i) The percentage of residue left after sieving good Portland cement in 90 micron I.S. sieve should not exceed 10%.
(ii) A good Portland cement should not have specific surface area less than 2250 cm${}^2$/gm of cement, found by air permeability method or braine's air permeability method.