ACI Concrete Field Testing Technician – Grade 1
Certification Exam for the 2026/2027 cycle,
featuring complete exam style questions with
accurate, up to-date answers.
The sensor of the temperature measuring device shall be submerged a minimum
of _____ in. [_____mm] into the freshly mixed concrete. - 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 _____. - 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 _____. - Answer-Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False? -
Answer-True
The temperature of concrete may be measured in a wall form. True of False -
Answer-True
,For use in the slump test, the end or both ends of the tamping rod must be _____.
- Answer-Rounded to a hemispherical tip
The sample of concrete for use in making the slump test must be obained in
accordance with ASTM Standard _____. - Answer-C172, Standard Practice for
Sampling Freshly Mixed Concrete
The slump mold should be in a dry condition before beginning the test. True or
False? - Answer-False
The surface on which the slump mold will be placed must be _____. - Answer-Flat,
level, moist, nonabsorbent, and free of vibration
The slump mold is filled in _____ layers. - Answer-3
Each layer should fill approximately _____ the volume of the mold. - Answer-One-
third
The approximate concrete depth (in verticle distance) after placing the first layer
is _____, and the second layer is _____. - Answer-2 5/8 in. [70 mm], 6 1/8 in. [160
mm]
What is the specified number of roddings for each layer? - Answer-25
How deep should the tamping rod penetrate into each layer? - Answer-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. - Answer-Slightly inclined
What must be done if the concrete drops below the top of the slump mold while
the top layer is being rodded? - Answer-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 _____. - Answer-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? - Answer-False
When raising the slump mold, it should not be rotated or twisted, True or False? -
Answer-True
How much time is allowed for lifting the slump mold? - Answer-5 +- 2 seconds
The measurement for slump is made from the top of the mold to what point of
the concrete specimen? - Answer-The displaced original center of the top surface
of the specimen
The slump of the concrete is measured and reported to the nearest _____. -
Answer-1/4 in. [5 mm]
Certification Exam for the 2026/2027 cycle,
featuring complete exam style questions with
accurate, up to-date answers.
The sensor of the temperature measuring device shall be submerged a minimum
of _____ in. [_____mm] into the freshly mixed concrete. - 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 _____. - 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 _____. - Answer-Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False? -
Answer-True
The temperature of concrete may be measured in a wall form. True of False -
Answer-True
,For use in the slump test, the end or both ends of the tamping rod must be _____.
- Answer-Rounded to a hemispherical tip
The sample of concrete for use in making the slump test must be obained in
accordance with ASTM Standard _____. - Answer-C172, Standard Practice for
Sampling Freshly Mixed Concrete
The slump mold should be in a dry condition before beginning the test. True or
False? - Answer-False
The surface on which the slump mold will be placed must be _____. - Answer-Flat,
level, moist, nonabsorbent, and free of vibration
The slump mold is filled in _____ layers. - Answer-3
Each layer should fill approximately _____ the volume of the mold. - Answer-One-
third
The approximate concrete depth (in verticle distance) after placing the first layer
is _____, and the second layer is _____. - Answer-2 5/8 in. [70 mm], 6 1/8 in. [160
mm]
What is the specified number of roddings for each layer? - Answer-25
How deep should the tamping rod penetrate into each layer? - Answer-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. - Answer-Slightly inclined
What must be done if the concrete drops below the top of the slump mold while
the top layer is being rodded? - Answer-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 _____. - Answer-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? - Answer-False
When raising the slump mold, it should not be rotated or twisted, True or False? -
Answer-True
How much time is allowed for lifting the slump mold? - Answer-5 +- 2 seconds
The measurement for slump is made from the top of the mold to what point of
the concrete specimen? - Answer-The displaced original center of the top surface
of the specimen
The slump of the concrete is measured and reported to the nearest _____. -
Answer-1/4 in. [5 mm]
