Sieve analysis results for an aggregate sample show 100% passing 1-inch sieve, 9

Question

Sieve analysis results for an aggregate sample show 100% passing 1-inch sieve, 95% passing % inch sieve, 88% passing yA inch sieve, 79% passing 3/8 inch sieve, ... What percentage of material is retained on the 1/2- inch sieve? A) 5% B) 7% C) 9% D) 12% The same aggregate sample has 4.5% absorption and a moisture content of 7%. In order to bring the aggregate to saturated surface dry (SSD) condition, you would: A) Add water to the aggregate B) Dry the aggregate C) Need to determine the bulk weight of the aggregate to answer C) None of the above

Explanation / Answer

10. B.

percentage retained on 1/2 inch sieve= 95-88=7%.

11. B.

as water absorption is less than the moisture content,we need to remove more water from the aggregates. Hence,we need to dry the aggregates in order to attain SSD condition.

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