The procedure requires washing the aggregate retained on the 4.75 mm (No. 4) sieve to remove adherent coatings after drying to a constant mass.

• A. True
• B. Not Given
• C. False
• D. Not Applicable

Answer: (C)

In sieve analysis, removing adherent coatings from the aggregate is done to get an accurate view of the true size distribution, but the washing happens as part of the sieving process before the drying to a constant mass, not after. Washing the material retained on the 4.75 mm sieve after it has already been dried would introduce moisture and could alter the mass and the separation between fractions, biasing the results. So the procedure does not call for washing after drying to constant mass; it requires washing during the washing step (before drying) and then drying the fractions to constant mass for weighing. That’s why the statement is not correct.