Construction Materials Exam 1 - Quiz
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When an aggregate's air voids are filled with water but no moisture exists on the surface it is a
__________. - ANS ✔saturated surface dry state
A typical value for specific gravity of a SSD sample of coarse aggregate is: - ANS ✔2.65
A dense gradation of aggregate in a concrete/asphalt mix would - ANS ✔· Mean aggregate is
occupying most of the volume
· Reduce the amount of void space between the pieces of aggregate
· Probably be more cost effective
Dry coarse aggregate is placed in a bucket with a volume of 0.25 ft^3. The bucket weighs 5.5 lbs
when empty and when filled with coarse aggregate using a tamping rod the weight (bucket and
aggregate) is 29.5 lbs. The dry-rodded unit weight of the coarse aggregate is - ANS ✔96 pounds
per cubic foot
By definition, "Fine" aggregate particles are smaller than what sieve size? - ANS ✔no. 4
An aggregate sample in a saturated surface dry state weighs 100 grams. After oven drying it
weighs 92 grams. The absorption of the sample is: - ANS ✔8.7%
Absorption is the moisture content of an aggregate in what moisture state? - ANS ✔Saturated
Surface Dry
Solutions 100% correct already
passed
When an aggregate's air voids are filled with water but no moisture exists on the surface it is a
__________. - ANS ✔saturated surface dry state
A typical value for specific gravity of a SSD sample of coarse aggregate is: - ANS ✔2.65
A dense gradation of aggregate in a concrete/asphalt mix would - ANS ✔· Mean aggregate is
occupying most of the volume
· Reduce the amount of void space between the pieces of aggregate
· Probably be more cost effective
Dry coarse aggregate is placed in a bucket with a volume of 0.25 ft^3. The bucket weighs 5.5 lbs
when empty and when filled with coarse aggregate using a tamping rod the weight (bucket and
aggregate) is 29.5 lbs. The dry-rodded unit weight of the coarse aggregate is - ANS ✔96 pounds
per cubic foot
By definition, "Fine" aggregate particles are smaller than what sieve size? - ANS ✔no. 4
An aggregate sample in a saturated surface dry state weighs 100 grams. After oven drying it
weighs 92 grams. The absorption of the sample is: - ANS ✔8.7%
Absorption is the moisture content of an aggregate in what moisture state? - ANS ✔Saturated
Surface Dry
