Page | 1
ACI AGGREGATE LEVEL 1 STUDY
MATERIAL 2026 QUESTIONS AND
ANSWERS| ACE YOUR GRADES.
C566
Large particles of coarse aggregrate, especially those larger than
____ in., will require greater time for the moisture to travel from
the interior of the particle to the surface.
a) 1
b) 2
c) 3
d) 4 - correct answer -b) 2
C566
A ventilated oven capable of maintaining the temperature
surrounding the sample at ________ ° C, is
required?
a) 90 +/- 10 °C
b) 100 +/- 10°C
c) 100 +/- 5 °C
d) 110 +/- 5 °C - correct answer -d) 110 +/- 5 deg C
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C566
When a microwave oven is used, the container shall be
____________. - correct answer -nonmetallic, glass
C566
When the test sample is obtained, determine the mass of the
sample to the nearest ______ %.
a) 1.0
b) 0.1
c) 0.01
d) 0.001 - correct answer -b) 0.1
C566
Very rapid heating may cause some particles to ______, resulting
in loss of particles.
a) expand
b) disappear
c) explode
d) shrink - correct answer -c) explode
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C566
If a source of heat other than the controlled temperature oven is
used, stir the sample during drying to accelerate the operation
and avoid localized overheating.
True or False? - correct answer -True
C566
When using a microwave oven, occasionally _________ are
present in aggregrates that may cause the material to overheat
and explode.
a) salts
b) air
c) oils
d) minerals - correct answer -d) minerals
C566
When a hot plate is used, drying can be expedited by using
sufficient ______________ to cover the
moist sample.
a) anhydrous denatured alcohol
b) sodium sulfate
c) sodium hexametaphosphate
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d) dihydrogen monoxide - correct answer -a) anhydrous
denatured alcohol
C566
The sample is thoroughly dry when further heating causes, or
would cause, less than ____ % additional
loss in mass.
a) .001
b) 0.01
c) 0.10
d) 1.0 - correct answer -c) 0.10
C566
Calculate the moisture content given the following information:
Wet Weight + Tare: 325.7g
Dry Weight + Tare: 301.7g
Tare: 44.0 g - correct answer -9.3%
C40
The test sample shall have a mass of about approximately_____.
ACI AGGREGATE LEVEL 1 STUDY
MATERIAL 2026 QUESTIONS AND
ANSWERS| ACE YOUR GRADES.
C566
Large particles of coarse aggregrate, especially those larger than
____ in., will require greater time for the moisture to travel from
the interior of the particle to the surface.
a) 1
b) 2
c) 3
d) 4 - correct answer -b) 2
C566
A ventilated oven capable of maintaining the temperature
surrounding the sample at ________ ° C, is
required?
a) 90 +/- 10 °C
b) 100 +/- 10°C
c) 100 +/- 5 °C
d) 110 +/- 5 °C - correct answer -d) 110 +/- 5 deg C
, Page | 2
C566
When a microwave oven is used, the container shall be
____________. - correct answer -nonmetallic, glass
C566
When the test sample is obtained, determine the mass of the
sample to the nearest ______ %.
a) 1.0
b) 0.1
c) 0.01
d) 0.001 - correct answer -b) 0.1
C566
Very rapid heating may cause some particles to ______, resulting
in loss of particles.
a) expand
b) disappear
c) explode
d) shrink - correct answer -c) explode
, Page | 3
C566
If a source of heat other than the controlled temperature oven is
used, stir the sample during drying to accelerate the operation
and avoid localized overheating.
True or False? - correct answer -True
C566
When using a microwave oven, occasionally _________ are
present in aggregrates that may cause the material to overheat
and explode.
a) salts
b) air
c) oils
d) minerals - correct answer -d) minerals
C566
When a hot plate is used, drying can be expedited by using
sufficient ______________ to cover the
moist sample.
a) anhydrous denatured alcohol
b) sodium sulfate
c) sodium hexametaphosphate
, Page | 4
d) dihydrogen monoxide - correct answer -a) anhydrous
denatured alcohol
C566
The sample is thoroughly dry when further heating causes, or
would cause, less than ____ % additional
loss in mass.
a) .001
b) 0.01
c) 0.10
d) 1.0 - correct answer -c) 0.10
C566
Calculate the moisture content given the following information:
Wet Weight + Tare: 325.7g
Dry Weight + Tare: 301.7g
Tare: 44.0 g - correct answer -9.3%
C40
The test sample shall have a mass of about approximately_____.
