ACI FINAL PAPER 2026 COMPLETE
QUESTIONS WITH SOLUTIONS
◉The concrete sample must be obtained in accodance with what
ASTM method? Answer: C172
◉What method of consolidation must be used when the slump is
greater than 3 in. [75 mm]? Answer: Rodding
◉What method of consolidation must be used when the slump is
less than 1 in. (25 mm]? Answer: Vibration
◉If rodding is the method of consolidation being used, the measure
must be filled in how many layers? Answer: 3
◉For a measure of 0.5 ft^3 [14 L], what is the required number of
strokes of the tamping rod for consolidation of each layer? Answer:
25
◉When rodding the middle and the top layers, the tamping rod
should penetrate into the layer below approximately _____. Answer:
1 in. [25 mm]
, ◉If vibration is the method of consolidation, the measure must be
filled in _____ approximately equal layers. Answer: 2
◉If, after consolidation of the final layer, the concrete level is 1/2 in.
(13 mm) above the top of the measure, what should be done?
Answer: Remove a representative portion of the excess concrete
with a trowel or scoop
◉After consolidation of the final layer, an excess of concrete ____
above the top of the measure is considered optimum. Answer: 1/8
in. [3 mm]
◉After completing the strike-off procedure, what must be done
before weighing the measure and sample? Answer: Clean off any
excess concrete
◉The pressure method of determining air content can be used on
concrete containing _____ _____ aggregate. Answer: Relatively Dense
◉The pressure method of determining air content cannot be used
on concrete containing the following types of aggregates, _____, _____,
_____. Answer: Lightweight, air-cooled blast furnace slag, or
aggregates of high porosity
QUESTIONS WITH SOLUTIONS
◉The concrete sample must be obtained in accodance with what
ASTM method? Answer: C172
◉What method of consolidation must be used when the slump is
greater than 3 in. [75 mm]? Answer: Rodding
◉What method of consolidation must be used when the slump is
less than 1 in. (25 mm]? Answer: Vibration
◉If rodding is the method of consolidation being used, the measure
must be filled in how many layers? Answer: 3
◉For a measure of 0.5 ft^3 [14 L], what is the required number of
strokes of the tamping rod for consolidation of each layer? Answer:
25
◉When rodding the middle and the top layers, the tamping rod
should penetrate into the layer below approximately _____. Answer:
1 in. [25 mm]
, ◉If vibration is the method of consolidation, the measure must be
filled in _____ approximately equal layers. Answer: 2
◉If, after consolidation of the final layer, the concrete level is 1/2 in.
(13 mm) above the top of the measure, what should be done?
Answer: Remove a representative portion of the excess concrete
with a trowel or scoop
◉After consolidation of the final layer, an excess of concrete ____
above the top of the measure is considered optimum. Answer: 1/8
in. [3 mm]
◉After completing the strike-off procedure, what must be done
before weighing the measure and sample? Answer: Clean off any
excess concrete
◉The pressure method of determining air content can be used on
concrete containing _____ _____ aggregate. Answer: Relatively Dense
◉The pressure method of determining air content cannot be used
on concrete containing the following types of aggregates, _____, _____,
_____. Answer: Lightweight, air-cooled blast furnace slag, or
aggregates of high porosity
