T 27 Sieve Analysis of Coarse and Fine

Question 1

Accurate determination of material finer than No. 200 sieve can be achieved by use of this method?

Answer 1

False

Question 2

For acceptance testing, the sample shall be dried to a constant mass in an oven according to ________.

Answer 2

T 255

Question 3

For control purposes only, it is generally not necessary to dry coarse aggregate for the sieve analysis, provided that:

Answer 3

The nominal max size is about 1/2 in. or larger, The coarse aggregate does not contain appreciable material finer than No. 4, The coarse aggregate is not highly absorptive (such as light weight agg)

Question 4

For sieves with openings smaller than No.4, the quantity retained on any sieve at the completion of the sieving operation shall not exceed _______ g/in^2.

Answer 4

4 g/in^2

Question 5

For aggregates with a NMAS of 1/2” or less, use the same sample for testing by Aashto T 11 and this method.

Answer 5

True

Question 6

The minimum dry mass for a 3/4” NMAS agg. is ______ kg

Answer 6

5

Question 7

To determine if adequate sieving has been achieved, strike the side at a rate of about _________ strokes per minute, turning the sieve about one sixth of a revolution at intervals of about_________ strokes.

Answer 7

150, 25.