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ACI Concrete Field Testing Technician Exam 2026 | Grade I Exam | All Questions and Correct Answers (Updated Version) | Graded A+ | Just Released

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This is the complete, updated test bank for the ACI Concrete Field Testing Technician - Grade I certification exam for the 2025/2026 cycle. This comprehensive resource covers all required ASTM standards, including C1064 (Temperature), C172 (Sampling), C143 (Slump), C138 (Density/Unit Weight), C231 (Pressure Method), C173 (Volumetric Method), and C31 (Making and Curing Specimens) . The document includes hundreds of exam-style multiple-choice questions with verified correct answers and detailed rationales, covering both the 55-question written exam and the 7-test performance examination .

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ACI Concrete Field Testing
Technician Exam 2026| Grade
I Exam | All Questions and
Correct Answers (Updated
Version) | Graded A+ | Just
Released
What is the purpose of ASTM C1064? - answer- Verify concrete temperature complies
with specifications

How deep must the thermometer be inserted into the concrete? - answer- 2 inches

How long should the thermometer remain in the concrete? - answer- 2-5 minutes

To what precision should temperature be reported? - answer- 1°F

What should the sampling container be before obtaining a temperature sample? -
answer- Dry

What does ASTM C172 cover? - answer- Sampling freshly mixed concrete

What is the maximum time between obtaining the first and last portion of the sample? -
answer- 15 minutes

How soon should slump, air, and temperature testing begin? - answer- Within 5 minutes

Within how many minutes should test cylinders be cast? - answer- 10 minutes

What is the minimum sample size? - answer- 1 cubic foot

Where are samples from a revolving drum mixer obtained? - answer- Middle portion
during discharge

What should be done to the sample before beginning testing? - answer- Remixed

What should samples always be protected from? - answer- Contamination and rapid
evaporation

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