ACI Exam Questions Grade A+
is based on the nominal maximum size (NMS) of the coarse aggregate. - ANSWERSThe size of
the Measure, used in determining the density of fresh concrete,
False - ANSWERSIt is permissible to use the bowl from the volumetric air meter to determine
the density of fresh concrete when the nominal maximum aggregate size is 1 inch or less.
either a tamping rod or vibrator. - ANSWERSThe appropriate method of consolidation, when the
slump of the fresh concrete is between 1 and 3 inches, is to use
penetrate the underlying layer about 1 inch. - ANSWERSWhen rodding the second and third
layers of concrete in the Measure, the rod should
2 - ANSWERSWhen a vibrator is used to consolidate the concrete in the Measure, fill the
Measure in _____ equal layers.
True - ANSWERSUpon completion of the consolidation process, it is optimal to have
approximately 1/8 inch of excess concrete above the rim of the Measure.
True - ANSWERSIt is permissible to add a small quantity of representative concrete to the
Measure to correct a deficiency.
only the strike-off plate. - ANSWERSTo insure that the Measure is level full with concrete, strike-
off the top surface of the concrete using
the mass and volume of the filled Measure, as well as the mass of the Measure when empty. -
ANSWERSIn order to determine the density of fresh concrete, it is necessary to determine
is based on the nominal maximum size (NMS) of the coarse aggregate. - ANSWERSThe size of
the Measure, used in determining the density of fresh concrete,
False - ANSWERSIt is permissible to use the bowl from the volumetric air meter to determine
the density of fresh concrete when the nominal maximum aggregate size is 1 inch or less.
either a tamping rod or vibrator. - ANSWERSThe appropriate method of consolidation, when the
slump of the fresh concrete is between 1 and 3 inches, is to use
penetrate the underlying layer about 1 inch. - ANSWERSWhen rodding the second and third
layers of concrete in the Measure, the rod should
2 - ANSWERSWhen a vibrator is used to consolidate the concrete in the Measure, fill the
Measure in _____ equal layers.
True - ANSWERSUpon completion of the consolidation process, it is optimal to have
approximately 1/8 inch of excess concrete above the rim of the Measure.
True - ANSWERSIt is permissible to add a small quantity of representative concrete to the
Measure to correct a deficiency.
only the strike-off plate. - ANSWERSTo insure that the Measure is level full with concrete, strike-
off the top surface of the concrete using
the mass and volume of the filled Measure, as well as the mass of the Measure when empty. -
ANSWERSIn order to determine the density of fresh concrete, it is necessary to determine
