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
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
