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ACI Certification Exam Questions and Answers 100% Pass
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ACI Certification Exam Questions and Answers 100% Pass 2. T/F: When the concrete contains large aggregate, the testing technician should wet- sieve the sample before making unit weight tests for use in yield computations. - ANSWER-False 4. T/F: Samples smaller than 28L (1 .) are allowed on rou...

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  • November 18, 2024
  • 8
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • aci certification exam questions and answers 100

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  • ACI concrete strength technician
  • ACI concrete strength technician

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ACI Certification Exam Questions and
Answers 100% Pass

2. T/F: When the concrete contains large aggregate, the testing technician should wet-

sieve the sample before making unit weight tests for use in yield computations. -

ANSWER✔✔-False


4. T/F: Samples smaller than 28L (1 cu.ft.) are allowed on routine air content,

temperature, and slump tests. - ANSWER✔✔-True


7. How do you regulate the rate of discharge of the batch from the revolving truck

drum mixer or agitator? - ANSWER✔✔-By the rate of revolution of the drum


10. 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? - ANSWER✔✔-Disregard the test and retest on another portion of the

sample


11. The mold is filled in three equal layers by volume, which makes the first third at

_______, and the second third at ________. - ANSWER✔✔-2 5/8, 6 1/8


15. What is the difference allowed by ACI when certifying an individual test using a

plastic slump cone vs. a metal slump cone? - ANSWER✔✔-0.5 inches


Copyright ©SOPHIABENNETT 2025 ACADEMIC YEARALL RIGHTS RESERVED. Page 1/8

, 16. T/F: The sides of the slump mold should be lightly tapped to consolidate the

concrete in the mold. - ANSWER✔✔-False


18. T/F: ASTM C 1064 defines the maximum recommended temperature for concrete. -

ANSWER✔✔-False


19. The temperature test method must be complete with in _________ after obtaining the

sample. - ANSWER✔✔-5 minutes


20. Each temperature-measuring device should be calibrated ________, or whenever

there is a question of _________. - ANSWER✔✔-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? - ANSWER✔✔-False


26. What is the required shape at the end of the tamping rod? - ANSWER✔✔-rounded

to a hemispherical tip


28. How do you find the density of a concrete batch? - ANSWER✔✔-(mass of measure

with concrete - mass of measure) / volume of measure


29. How do you find the yield of a concrete batch? - ANSWER✔✔-(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 - ANSWER✔✔-False




Copyright ©SOPHIABENNETT 2025 ACADEMIC YEARALL RIGHTS RESERVED. Page 2/8

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