ACI Certification- Concrete Field
Testing Technician Grade 1 CP-1 (12)
ASTM C1064 - ANS-Standard Test Method For Temperature of Freshly Mixed
Hydraulic-Cement Concrete
The sensor of the temperature measuring device shall be submerged a minimum of
______ inches into the freshly mixed concrete. - ANS-3"
The temperature measuring device shall have a capacity of measuring temperature of
freshly mixed concrete to ± ______ °F throughout a range of ____________. - ANS-1
degree, 30 degrees to 120 degrees
The temperature measuring device shall be calibrated ______ , or whenever there is a
question of ______ . - ANS-Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False? -
ANS-True
The temperature of concrete may be measured in a wall form. True or False? - ANS-
True
What must be done to the sample container prior to sampling the concrete? - ANS-
Dampen with water
What must be done to the concrete surrounding the temperature measuring device after
the device is submerged in the fresh concrete? - ANS-Close off air voids by gently
pressing the concrete around the device
How long must the temperature measuring device remain in the freshly mixed concrete?
- ANS-minimum of two minutes, maximum of five minutes
The temperature of the concrete is reported to the nearest ______ °F - ANS-1 degree
A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True or
False? - ANS-False
ASTM C172 - ANS-Standard Practice for Sampling Freshly Mixed Concrete
Sampling by this method is required when tests are to be made to determine _____ with
specification requirements. - ANS-Compliance
, This method covers sampling from four types of mixers, which are _____ , _____ ,
_____ , and _____ . - ANS-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. - ANS-15
Portions of a composite sample shall be thoroughly remixed before beginning tests on
the sample. True or False? - ANS-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. - ANS-5
The molding of strength test specimens shall begin within _____ minutes after
fabricating the composite
sample. - ANS-15
If rodding is the method of consolidation being used, the measure must be filled in how
many layers? - ANS-3
For a measure of 0.5 ft3 [14 L], what is the required number of strokes of the tamping
rod for consolidation
of each layer? - ANS-25
When rodding the middle and the top layers, the tamping rod should penetrate into the
layer below approximately _____. - ANS-1 in. [25 mm]
If vibration is the method of consolidation, the measure must be filled in _____
approximately equal layers. - ANS-2
If, after consolidation of the final layer, the concrete level is 1/2 in. (13 mm) above the
top of the measure, what should be done? - ANS-Remove a representative portion of
the excess concrete with a trowel or scoop
After consolidation of the final layer, an excess of concrete _____ above the top of the
measure is considered optimum. - ANS-⅛ in. [3 mm]
After completing the strike-off procedure, what must be done before weighing the
measure and sample? - ANS-Clean off any excess concrete
Density (Unit Weight) Calculation
Known: Volume of measure = 0.504 ft3 [14.27 L or 0.01427 m3]
Mass of empty measure = 19.6 lb [8.89 kg]
Testing Technician Grade 1 CP-1 (12)
ASTM C1064 - ANS-Standard Test Method For Temperature of Freshly Mixed
Hydraulic-Cement Concrete
The sensor of the temperature measuring device shall be submerged a minimum of
______ inches into the freshly mixed concrete. - ANS-3"
The temperature measuring device shall have a capacity of measuring temperature of
freshly mixed concrete to ± ______ °F throughout a range of ____________. - ANS-1
degree, 30 degrees to 120 degrees
The temperature measuring device shall be calibrated ______ , or whenever there is a
question of ______ . - ANS-Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False? -
ANS-True
The temperature of concrete may be measured in a wall form. True or False? - ANS-
True
What must be done to the sample container prior to sampling the concrete? - ANS-
Dampen with water
What must be done to the concrete surrounding the temperature measuring device after
the device is submerged in the fresh concrete? - ANS-Close off air voids by gently
pressing the concrete around the device
How long must the temperature measuring device remain in the freshly mixed concrete?
- ANS-minimum of two minutes, maximum of five minutes
The temperature of the concrete is reported to the nearest ______ °F - ANS-1 degree
A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True or
False? - ANS-False
ASTM C172 - ANS-Standard Practice for Sampling Freshly Mixed Concrete
Sampling by this method is required when tests are to be made to determine _____ with
specification requirements. - ANS-Compliance
, This method covers sampling from four types of mixers, which are _____ , _____ ,
_____ , and _____ . - ANS-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. - ANS-15
Portions of a composite sample shall be thoroughly remixed before beginning tests on
the sample. True or False? - ANS-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. - ANS-5
The molding of strength test specimens shall begin within _____ minutes after
fabricating the composite
sample. - ANS-15
If rodding is the method of consolidation being used, the measure must be filled in how
many layers? - ANS-3
For a measure of 0.5 ft3 [14 L], what is the required number of strokes of the tamping
rod for consolidation
of each layer? - ANS-25
When rodding the middle and the top layers, the tamping rod should penetrate into the
layer below approximately _____. - ANS-1 in. [25 mm]
If vibration is the method of consolidation, the measure must be filled in _____
approximately equal layers. - ANS-2
If, after consolidation of the final layer, the concrete level is 1/2 in. (13 mm) above the
top of the measure, what should be done? - ANS-Remove a representative portion of
the excess concrete with a trowel or scoop
After consolidation of the final layer, an excess of concrete _____ above the top of the
measure is considered optimum. - ANS-⅛ in. [3 mm]
After completing the strike-off procedure, what must be done before weighing the
measure and sample? - ANS-Clean off any excess concrete
Density (Unit Weight) Calculation
Known: Volume of measure = 0.504 ft3 [14.27 L or 0.01427 m3]
Mass of empty measure = 19.6 lb [8.89 kg]
