ACI Grade 1 Field Testing Certification
Practice Test – Irving Containing 100
terms with Solutions
Test includes: ASTM C 1064 Standard Test Method for Temperature
of Freshly Mixed Hydraulic - Cement Concrete ASTM C172 Standard Test
Method for Sampling Freshly Mixed Concrete ASTM C143 Standard Test
Method for Slump of Hydraulic- Cement Concrete ASTM C138 Standard
Test Method for Density (Unit Weight) Yield of Concrete ASTM C231
Standard Test Method for Air Content of Freshly Mixed Concrete
(Pressure Method) ASTM C173 Standard Test Method for Air Content of
Freshly Mixed Concrete (Volumetric Me…
, ACI Grade 1 Field Testing Certification Practice Test – Irving
For concrete with aggregates less than 3 inches, the thermometer must remain in
the fresh concrete sample a minimum of 5 minutes or until the temperature
reading stabilizes. (T or F) - Answer: False (2-5 minutes)
The temperature measuring device must be accurate to within 0.1 degree. (T or F)
- Answer:
The temperature measuring device shall have a capacity of measuring
temperature of freshly mixed concrete throughout a range of _____ to _____
degree F ( ______ to ______ degree C) - Answer: 30 to 120 degree F ( 0 to 50
degree C)
A composite sample is not needed if only the temperature test is being run. (T or
F) - Answer: True
The temperature of fresh concrete in a placement must be measured by inserting
a thermometer into the top six inches of concrete. (T or F) - Answer: False (3 in.)
The temperature of the concrete is recorded to the nearest ______ degree F
(______ degree C) - Answer: 1 degree F (0.5 degree C)
, ACI Grade 1 Field Testing Certification Practice Test – Irving
ASTM C1064 states the container used to measure temperature of concrete must
be large enough to provide at least 5 inches of concrete around the sensor. (T or F)
- Answer:
Calibrate the temperature measuring device at least __________, or whenever
there is a question of accuracy. - Answer: Annually
After the thermometer is placed in the concrete: - Answer: Gently press concrete
around the thermometer
According to ASTM C1064, what is one reason to take the temperature of
concrete? - Answer: Verify conformance
It is allowable to remove the temperature measuring devices from the freshly
mixed concrete to read the temperature if you cannot see the reading. (T or F) -
Answer: False
The maximum allowable time between obtaining the first and last portions of the
composite sample may not exceed 5 minutes. (T or F) - Answer: False