ACI Certification Concrete Field-Testing
Tech Grade 1 Exam Questions (142
Terms) with Correct Answers 2024.
The end of the temperature sensing portion of the temperature measuring device
is submerged a minimum of ___________ into FRESHLY mixed concrete. - Answer:
75 mm (3 in)
The temperature measuring device shall be capable of accurately measuring the
temperature of freshly mixed concrete to _______________ throughout a range
, ACI Certification Concrete Field-Testing Tech Grade 1
of ____________ C to _____________ C and _____________ F to ___________ F.
- Answer: 0.5 C (1 F), 0-50 C (30-120 F)
The temperature measuring device shall be verified ______________, or
whenever there is a question of ________________. - Answer: annually, accuracy
the temperature of concrete may be measured in a wheelbarrow? true or false -
Answer: true
the temperature of concrete may be measuring in a wall form? true or false -
Answer: true
A composite sample of concrete is required even if the only purpose for obtaining
the sample is to determine temperature? true or false - Answer: false
what must be done to the sample container prior to sampling the concrete? -
Answer: dampen
What must be done to the concrete surrounding the temperature measuring
device after the device is submerged in the fresh concrete? - Answer: gently press
concrete around tmd
How long must the temperature measuring device remain in the freshly mixed
concrete? - Answer: 2-5 min
, ACI Certification Concrete Field-Testing Tech Grade 1
After the temperature of the concrete is read, what is then required? - Answer:
report the temp
The temperature of the concrete is reported to the nearest ________________. -
Answer: 0.5 C (1 F)
According to Test Method C1064/1064M, what is one reason to take the
temperature of concrete? - Answer: verify conformance to specified requirements
A maximum temperature of freshly mixed concrete is specified in C1064/1064M.
true or false - Answer: false
The sample of concrete used for temperature determination must be rodded 25
times. true or false - Answer: false
C143\C143M - Answer: test method testing slump
The slump test is applicable to plastic concrete with a maximum size aggregate of
______ - Answer: 1.5 inches (37.5 mm)
When the concrete contains aggregate larger than allowed for the slump test, the
large aggregate must - Answer: wet-sieved (over 37.5 mm sieve)
The mold for making the slump test is in the shape of a _______ - Answer:
frustum of a cone