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Question

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

A
permeability test
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B
soundness test
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C
vicat apparatus test
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D
compression test
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Solution

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 cm2/gm of cement, found by air permeability method or braine's air permeability method.

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