ACI CONCRETE FIELD ESTING TECHNICIAN- GRADE I
VERSION 1 ACTUAL EXAM NEWEST WITH COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS|
BRAND NEW VERSION!
The approximate concrete depth (in verticle distance) after placing the first layer is
_____, and the second layer is _____.
2 5/8 in. [70 mm], 6 1/8 in. [160 mm]
What is the specified number of roddings for each layer?
25
How deep should the tamping rod penetrate into each layer?
Rod each layer throughout its depth; on the second and final layers, the rod should
penetrate into the previous layer approximately 1 in. [25 mm]
When rodding the bottom layer, the tamping rod must be _____ to uniformly
distribute the strokes.
Slightly inclined
What must be done if the concrete drops below the top of the slump mold while the
top layer is being rodded?
Add additional concrete to keep an excess of concrete above the top of the mold at
all times
Prior to lifting the mold, concrete must be removed from _____.
The area surrounding the base of the mold
After the final rodding, the sides of the slump mold should should be tapped lightly
with the tamping rod. True or False?
False
When raising the slump mold, it should not be rotated or twisted, True or False?
True
,How much time is allowed for lifting the slump mold?
5 +- 2 seconds
The measurement for slump is made from the top of the mold to what point of the
concrete specimen?
The displaced original center of the top surface of the specimen
The slump of the concrete is measured and reported to the nearest _____.
1/4 in. [5 mm]
How much time is allowed to conduct the slump test from beginning to
completion?
2 1/2 minutes
The diameter of the tamping rod used in the test method is _____.
5/8 in. [16 mm]
What is the required shape of the tamping end of the rod?
Rounded to a hemispherical tip
What is the required minimum frequency of the vibrator used in this test method?
7000 vibrations per minute
The outside diameter or side dimension of the vibrating element must be at least
_____ but not greater than _____.
0.75 in. [19 mm], 1.50 in. [38 mm]
The sensor of the temperature measuring device shall be submerged a minimum of
_____ in. [_____mm] into the freshly mixed concrete.
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 _____.
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 _____.
Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False?
True
The temperature of concrete may be measured in a wall form. True of False
True
A composite sample of concrete is required even if the only purpose for obtaining
the sample is to determine temperature. True of False?
False
What must be done to the sample container prior to sampling the concrete?
Dampen (with water)
What must be done to the concrete surrounding the temperature measuring device
after the device is submerged in the fresh concrete.
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?
At least 2 minutes but not more than 5 minutes
After the temperature of the concrete is read, what is required?
Reporting of temperature
The temperature of concrete is reported to the nearest _____ degrees F [_____ C]
1 degree F [0.5 C]
According to ASTM C1064, what is one reason to take the temperature of
concrete?
Verify conformance to a specified requirement for temperature of concrete
VERSION 1 ACTUAL EXAM NEWEST WITH COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS|
BRAND NEW VERSION!
The approximate concrete depth (in verticle distance) after placing the first layer is
_____, and the second layer is _____.
2 5/8 in. [70 mm], 6 1/8 in. [160 mm]
What is the specified number of roddings for each layer?
25
How deep should the tamping rod penetrate into each layer?
Rod each layer throughout its depth; on the second and final layers, the rod should
penetrate into the previous layer approximately 1 in. [25 mm]
When rodding the bottom layer, the tamping rod must be _____ to uniformly
distribute the strokes.
Slightly inclined
What must be done if the concrete drops below the top of the slump mold while the
top layer is being rodded?
Add additional concrete to keep an excess of concrete above the top of the mold at
all times
Prior to lifting the mold, concrete must be removed from _____.
The area surrounding the base of the mold
After the final rodding, the sides of the slump mold should should be tapped lightly
with the tamping rod. True or False?
False
When raising the slump mold, it should not be rotated or twisted, True or False?
True
,How much time is allowed for lifting the slump mold?
5 +- 2 seconds
The measurement for slump is made from the top of the mold to what point of the
concrete specimen?
The displaced original center of the top surface of the specimen
The slump of the concrete is measured and reported to the nearest _____.
1/4 in. [5 mm]
How much time is allowed to conduct the slump test from beginning to
completion?
2 1/2 minutes
The diameter of the tamping rod used in the test method is _____.
5/8 in. [16 mm]
What is the required shape of the tamping end of the rod?
Rounded to a hemispherical tip
What is the required minimum frequency of the vibrator used in this test method?
7000 vibrations per minute
The outside diameter or side dimension of the vibrating element must be at least
_____ but not greater than _____.
0.75 in. [19 mm], 1.50 in. [38 mm]
The sensor of the temperature measuring device shall be submerged a minimum of
_____ in. [_____mm] into the freshly mixed concrete.
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 _____.
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 _____.
Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False?
True
The temperature of concrete may be measured in a wall form. True of False
True
A composite sample of concrete is required even if the only purpose for obtaining
the sample is to determine temperature. True of False?
False
What must be done to the sample container prior to sampling the concrete?
Dampen (with water)
What must be done to the concrete surrounding the temperature measuring device
after the device is submerged in the fresh concrete.
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?
At least 2 minutes but not more than 5 minutes
After the temperature of the concrete is read, what is required?
Reporting of temperature
The temperature of concrete is reported to the nearest _____ degrees F [_____ C]
1 degree F [0.5 C]
According to ASTM C1064, what is one reason to take the temperature of
concrete?
Verify conformance to a specified requirement for temperature of concrete
