ACI Written Exam questions with correct
answers
The sensor of the temperature measureing device shall be submerged a minimum of ____ in Answer ✓✓ 3 (75mm)
The temperature measureing device shall have a capacity of measuring temperature
of freshly mixed conrcrete to +-_____ degrees F throught a range of _____ Answer✓✓ 1(.5 degrees C), 30-120 (0-50 degrees C)
The temperature measuring device shall be calibrated____, or whenever there is a question of _____ Answer ✓✓ annually, accuracy
The temp of concrete may be measured in a wheelbarrow Answer ✓✓ true
the temp of concrete may be measured in a wall form Answer ✓✓ true
A composite sample of concrete is required even if the only purpose for obtaining the sample is to determine temp. Answer ✓✓ false
What must be done to the sample container prior to sampling the concrete Answer✓✓ dampen (with water)
what must be done to the concrete surrounding the temp measuring device after the
device has submerged Answer ✓✓ Press concrete around measuring device
How long must the temp device remain in the concrete Answer ✓✓ at least 2 minutes (but no more than 5) After temp of concrete is read, what then is required Answer ✓✓ reporting of temp
the temp of concrete to be measured to the nearest ____degree F Answer ✓✓ 1 (.5 degree C)
According to the ASTM C1064 what is one reason to take the temp of concrete Answer✓✓ verify conformance to a specified requirement for temp
A max temp of concrete is specified in ASTM C1064 Answer ✓✓ False
The sample of concrete used for temp determination must be rodded 25 times Answer✓✓ False
Sampling by this method is required when tests are to be made to determine ____ with specification requirements Answer ✓✓ compliance
The method covers sampling from four types of mixers which are _____, _____, ____, and _______ Answer ✓✓ stationary mixes, 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 Answer ✓✓ 15
Portions of a composite sample shall be thoroughly remixed before beginning tests on the sample Answer ✓✓ True
answers
The sensor of the temperature measureing device shall be submerged a minimum of ____ in Answer ✓✓ 3 (75mm)
The temperature measureing device shall have a capacity of measuring temperature
of freshly mixed conrcrete to +-_____ degrees F throught a range of _____ Answer✓✓ 1(.5 degrees C), 30-120 (0-50 degrees C)
The temperature measuring device shall be calibrated____, or whenever there is a question of _____ Answer ✓✓ annually, accuracy
The temp of concrete may be measured in a wheelbarrow Answer ✓✓ true
the temp of concrete may be measured in a wall form Answer ✓✓ true
A composite sample of concrete is required even if the only purpose for obtaining the sample is to determine temp. Answer ✓✓ false
What must be done to the sample container prior to sampling the concrete Answer✓✓ dampen (with water)
what must be done to the concrete surrounding the temp measuring device after the
device has submerged Answer ✓✓ Press concrete around measuring device
How long must the temp device remain in the concrete Answer ✓✓ at least 2 minutes (but no more than 5) After temp of concrete is read, what then is required Answer ✓✓ reporting of temp
the temp of concrete to be measured to the nearest ____degree F Answer ✓✓ 1 (.5 degree C)
According to the ASTM C1064 what is one reason to take the temp of concrete Answer✓✓ verify conformance to a specified requirement for temp
A max temp of concrete is specified in ASTM C1064 Answer ✓✓ False
The sample of concrete used for temp determination must be rodded 25 times Answer✓✓ False
Sampling by this method is required when tests are to be made to determine ____ with specification requirements Answer ✓✓ compliance
The method covers sampling from four types of mixers which are _____, _____, ____, and _______ Answer ✓✓ stationary mixes, 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 Answer ✓✓ 15
Portions of a composite sample shall be thoroughly remixed before beginning tests on the sample Answer ✓✓ True
