ACI WRITTEN EXAM PRACTICE WITH
ACCURATE SOLUTIONS
The sensor of the temperature measuring device shall have at least ____ inches of
concrete cover in all directions. - ANS-3
The temperature measuring device shall have a capacity or measuring freshly mixed
concrete to the nearest ________F. - ANS-1
The temperature measuring device shall be calibrated ________, or whenever there is
a question of its ____________________. - ANS-Annually, accuracy
The concrete temperature is read to the nearest ___________F. - ANS-1
The temperature measuring device shall have a range of ______F to _________F. -
ANS-30, 120
The temperature may be measured in a wall form - ANS-True
The temperature measuring device must remain in the concrete for a minimum of? -
ANS-2 Minutes
With large aggregate of 3" diameter the concrete temperature may take up to twenty
minutes to stabilize due to heat transfer from the aggregate to the cement paste. - ANS-
True
The maximum time allowable time in between obtaining the first and final portion of a
composite sample is? - ANS-15 Minutes
The minimum size of a composite sample required when strength specimens are to be
molded - ANS-1.0CF
Sampling form a stationary mixer or revolving drum mixer, the batch must be sampled
at _____ or more regularly spaced intervals - ANS-3
The composite sample for a paving mixer must represent a minimum of _____ different
portions of the batch of concrete taken from the pile after discharge. - ANS-5
, The procedures of Method C138 are followed, and the mass of the measure plus the
concrete is found to be 95.5 lbs., calculate the density (unit weight) Volume of measure
= 0.510CF and the Mass of the empty measure is 18.4 lbs. - ANS-151.2 lbs/cf
For a design batch of 7CY, the total mass of all materials batched is 27,300 lbs. Using a
density of 143.5lbs/CF calculate the yield per batch in CF. - ANS-190
Using the information in question # 48, determine the relative yield for the total batch. -
ANS-1.005
Using a theoretical density of 151.4lbs/CF and the actual density of 143.5 lbs/CF
calculate the gravimetric air content of the concrete in a percentage. - ANS-5%
The sample or concrete for the pressure air test must be obtained in accordance to the
ASTM ____ standard. - ANS-C172
The pressure air test can only be used for concrete mixes with what type of aggregate?
- ANS-Relative Dense
The maximum size of course aggregate allowed for pressure air test is
________inches. - ANS-2
If the concrete is consolidated through rodding for the pressure air test the measure is
filled in _____ layers. - ANS-3
If the concrete is consolidated through rodding,for the pressure air test the measure is
filled in ____layers - ANS-3
When the slump of the concrete exceeds ____ inches, vibration cannot be used for the
consolidation of the concrete for pressure air tests - ANS-3
When rodding the sample for pressure air tests, each layer is rodded ______times -
ANS-25
When consolidation is done through vibration, for the pressure air test the vibrator is
inserted in the mix ___times per layer. - ANS-2
You must tap the sides of the measure 10 to 15 times after consolidation is done by
vibration for the pressure air test - ANS-False
What is the specified weight (lbs) of the mallet when the measure is .05CF or less? -
ANS-1.25 +/- .5
What are the characteristics, diameter (in) and length (in), of the tamping rod used in
the pressure air test method? - ANS-5/8,16
ACCURATE SOLUTIONS
The sensor of the temperature measuring device shall have at least ____ inches of
concrete cover in all directions. - ANS-3
The temperature measuring device shall have a capacity or measuring freshly mixed
concrete to the nearest ________F. - ANS-1
The temperature measuring device shall be calibrated ________, or whenever there is
a question of its ____________________. - ANS-Annually, accuracy
The concrete temperature is read to the nearest ___________F. - ANS-1
The temperature measuring device shall have a range of ______F to _________F. -
ANS-30, 120
The temperature may be measured in a wall form - ANS-True
The temperature measuring device must remain in the concrete for a minimum of? -
ANS-2 Minutes
With large aggregate of 3" diameter the concrete temperature may take up to twenty
minutes to stabilize due to heat transfer from the aggregate to the cement paste. - ANS-
True
The maximum time allowable time in between obtaining the first and final portion of a
composite sample is? - ANS-15 Minutes
The minimum size of a composite sample required when strength specimens are to be
molded - ANS-1.0CF
Sampling form a stationary mixer or revolving drum mixer, the batch must be sampled
at _____ or more regularly spaced intervals - ANS-3
The composite sample for a paving mixer must represent a minimum of _____ different
portions of the batch of concrete taken from the pile after discharge. - ANS-5
, The procedures of Method C138 are followed, and the mass of the measure plus the
concrete is found to be 95.5 lbs., calculate the density (unit weight) Volume of measure
= 0.510CF and the Mass of the empty measure is 18.4 lbs. - ANS-151.2 lbs/cf
For a design batch of 7CY, the total mass of all materials batched is 27,300 lbs. Using a
density of 143.5lbs/CF calculate the yield per batch in CF. - ANS-190
Using the information in question # 48, determine the relative yield for the total batch. -
ANS-1.005
Using a theoretical density of 151.4lbs/CF and the actual density of 143.5 lbs/CF
calculate the gravimetric air content of the concrete in a percentage. - ANS-5%
The sample or concrete for the pressure air test must be obtained in accordance to the
ASTM ____ standard. - ANS-C172
The pressure air test can only be used for concrete mixes with what type of aggregate?
- ANS-Relative Dense
The maximum size of course aggregate allowed for pressure air test is
________inches. - ANS-2
If the concrete is consolidated through rodding for the pressure air test the measure is
filled in _____ layers. - ANS-3
If the concrete is consolidated through rodding,for the pressure air test the measure is
filled in ____layers - ANS-3
When the slump of the concrete exceeds ____ inches, vibration cannot be used for the
consolidation of the concrete for pressure air tests - ANS-3
When rodding the sample for pressure air tests, each layer is rodded ______times -
ANS-25
When consolidation is done through vibration, for the pressure air test the vibrator is
inserted in the mix ___times per layer. - ANS-2
You must tap the sides of the measure 10 to 15 times after consolidation is done by
vibration for the pressure air test - ANS-False
What is the specified weight (lbs) of the mallet when the measure is .05CF or less? -
ANS-1.25 +/- .5
What are the characteristics, diameter (in) and length (in), of the tamping rod used in
the pressure air test method? - ANS-5/8,16
