1
ACI CERTIFICATION EXAM NEWEST VERSION -2025/2026- 100+
QUESTIONS AND VERIFIED ANSWERS 100% CORRECT
GUARANTEED SUCCESS
The mold is filled in three equal layers by volume, which makes the first third at
_______, and the second third at ________.
2 5/8, 6 1/8
What is the difference allowed by ACI when certifying an individual test using a
plastic slump cone vs. a metal slump cone?
0.5 inches
T/F: The sides of the slump mold should be lightly tapped to consolidate the
concrete in the mold.
False
How do you regulate the rate of discharge of the batch from the revolving truck
drum mixer or agitator?
By the rate of revolution of the drum
While the technician is checking the slump of the concrete, there is a decided
falling away or shearing off of the concrete from one side of the sample. What
should the technician do?
Disregard the test and retest on another portion of the sample
18. T/F: ASTM C 1064 defines the maximum recommended temperature for
concrete.
False
, 2
19. The temperature test method must be complete with in _________ after
obtaining the sample.
5 minutes
20. Each temperature-measuring device should be calibrated ________, or
whenever there is a question of _________.
annually, accuracy
23. T/F: After strike off of the measure used to determine density, a small quantity
of concrete may be added to correct a deficiency?
False
26. What is the required shape at the end of the tamping rod?
rounded to a hemispherical tip
28. How do you find the density of a concrete batch?
(mass of measure with concrete - mass of measure) / volume of measure
29. How do you find the yield of a concrete batch?
(mass of all materials batched / (density of concrete * 27))
33. T/F: Test method ASTM C231 is intended for use with all concretes and
aggregates for which an aggregate correction factor can be determined
False
34. T/F: The petcocks are closed before pumping any air into the chamber on the
type B meter.
False
36. The sample is obtained in accordance to ASTM C ___________.
172
37. If the aggregate correction factor for a given source of fine and coarse
aggregate is found to be 0.2% in a pressure air meter, and an air content value of
ACI CERTIFICATION EXAM NEWEST VERSION -2025/2026- 100+
QUESTIONS AND VERIFIED ANSWERS 100% CORRECT
GUARANTEED SUCCESS
The mold is filled in three equal layers by volume, which makes the first third at
_______, and the second third at ________.
2 5/8, 6 1/8
What is the difference allowed by ACI when certifying an individual test using a
plastic slump cone vs. a metal slump cone?
0.5 inches
T/F: The sides of the slump mold should be lightly tapped to consolidate the
concrete in the mold.
False
How do you regulate the rate of discharge of the batch from the revolving truck
drum mixer or agitator?
By the rate of revolution of the drum
While the technician is checking the slump of the concrete, there is a decided
falling away or shearing off of the concrete from one side of the sample. What
should the technician do?
Disregard the test and retest on another portion of the sample
18. T/F: ASTM C 1064 defines the maximum recommended temperature for
concrete.
False
, 2
19. The temperature test method must be complete with in _________ after
obtaining the sample.
5 minutes
20. Each temperature-measuring device should be calibrated ________, or
whenever there is a question of _________.
annually, accuracy
23. T/F: After strike off of the measure used to determine density, a small quantity
of concrete may be added to correct a deficiency?
False
26. What is the required shape at the end of the tamping rod?
rounded to a hemispherical tip
28. How do you find the density of a concrete batch?
(mass of measure with concrete - mass of measure) / volume of measure
29. How do you find the yield of a concrete batch?
(mass of all materials batched / (density of concrete * 27))
33. T/F: Test method ASTM C231 is intended for use with all concretes and
aggregates for which an aggregate correction factor can be determined
False
34. T/F: The petcocks are closed before pumping any air into the chamber on the
type B meter.
False
36. The sample is obtained in accordance to ASTM C ___________.
172
37. If the aggregate correction factor for a given source of fine and coarse
aggregate is found to be 0.2% in a pressure air meter, and an air content value of
