Exam 2026 With Questions And Answers
The sensor of the temperature measuring device shall be submerged a
minimum of in. [ mm] into the freshly mixed concrete. -
correct answer-3 in. [75 mm]
The temperature measuring device shall have a capacity of measuring
temperature of freshly mixed concrete to +-
degrees F [+- C] throughout a range of .
- correct answer-1 degree F [0.5 C], 30 degrees F to 120 F [0 C to 50 C]
The temperature measuring device shall be calibrated , or
whenever there is a question of . - correct answer-Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or
False? - correct answer-True
The temperature of concrete may be measured in a wall form. True of False -
correct answer-True
A composite sample of concrete is required even if the only purpose for
obtaining the sample is to determine temperature. True of False? - correct
answer-False
,What must be done to the sample container prior to sampling the concrete?
- correct answer-Dampen (with water)
What must be done to the concrete surrounding the temperature measuring device
after the device is submerged in the fresh concrete. - correct
answer-Gently press the concrete around the temperature measuring device at
the surface of the concrete
How long must the temperature measuring device remain in the freshly mixed
concrete? - correct answer-At least 2 minutes but not more than 5 minutes
After the temperature of the concrete is read, what is required? - correct
answer-Reporting of temperature
The temperature of concrete is reported to the nearest
degrees F [
C] - correct answer-1 degree F [0.5 C]
According to ASTM C1064, what is one reason to take the temperature of
concrete? - correct answer-Verify conformance to a specified requirement for
temperature of concrete
A maximum temperature of freshly mixed concrete is specified in ASTM
C1064. True of False? - correct answer-False
, The sample of concrete used for temperature determination must be rodded 25
times. True or False? - correct answer-False
Sampling by this method is required when tests are to be made to
determine with specification requirements. - correct
answer- Compliance
This method covers sampling from four types of mixtures which are
,
, , and . - correct answer-Stationary mixers,
paving mixers, revolving drum mixers, and open top mixers
The maximum allowable time between obtaining the first and final portions
of a composite sample is minutes. - correct answer-15
Portions of a composite sample shall be thoroughly remixed bfore beginning
tests on the sample. True of False? - correct answer-True
The maximum elapsed time allowed between obtaining the final portion of
the composite sample and beginning the tests for slump, temperature, and air
content is minutes. - correct answer-5