ACI CERTIFICATION- CONCRETE FIELD-TESTING TECHNICIAN
GRADE 1 CP-1 (12) EXAM QUESTIONS AND WELL VERIFIED
ANSWERS
ASTM C1064 - ANS✅✅Standard Test Method For Temperature of Freshly
Mixed Hydraulic-Cement Concrete
The slump test is applicable to plastic concrete with a maximum size aggregate
of _____ . - ANS✅✅1½ in.
When the concrete contains aggregate larger than allowed for the slump test,
the large aggregate must be _____. - ANS✅✅Removed by wet sieving the
sample over 1½ in. sieve
The mold for making the slump test is in the shape of _____. - ANS✅✅The
frustum of a cone
The height of the slump mold is _____. - ANS✅✅12 in.
The interior surface of the slump mold is allowed to have minor irregularities.
True or False? - ANS✅✅False
For use in the slump test, the end or both ends of the tamping rod must be _____.
- ANS✅✅Rounded to a hemispherical tip
,The sample of concrete for use in making the slump test must be obtained in
accordance with ASTM Standard _____. - ANS✅✅C172, Standard Practice for
Sampling Freshly Mixed Concrete
The slump mold should be in a dry condition before beginning the test. True or
False? - ANS✅✅False
The surface on which the slump mold will be placed must be _____. -
ANS✅✅Flat, level, moist, nonabsorbent, and free of vibration
The slump mold is filled in _____ layers. - ANS✅✅3
Each layer should fill approximately _____ the volume of the mold. -
ANS✅✅One-third
The approximate concrete depth (in vertical distance) after placing the first layer
is _____, and the second layer is _____. - ANS✅✅2⅝ in. [70 mm], 6⅛ in. [160
mm]
What is the specified number of roddings for each layer? - ANS✅✅25
How deep should the tamping rod penetrate into each layer? - ANS✅✅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. - ANS✅✅Slightly inclined
What must be done if the concrete drops below the top of the slump mold while
the top layer is being rodded? - ANS✅✅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 _______. -
ANS✅✅The area surrounding the base of the mold
After the final rodding, the sides of the slump mold should be tapped lightly with
the tamping rod. True or False? - ANS✅✅False
When raising the slump mold, it should not be rotated or twisted. True or False? -
ANS✅✅True
How much time is allowed for lifting the slump mold? - ANS✅✅5 ± 2 seconds
The measurement for slump is made from the top of the mold to what point of
the concrete specimen? - ANS✅✅The displaced original center of the top
surface of the specimen
The sensor of the temperature measuring device shall be submerged a minimum
of ______ inches into the freshly mixed concrete. - ANS✅✅3"
GRADE 1 CP-1 (12) EXAM QUESTIONS AND WELL VERIFIED
ANSWERS
ASTM C1064 - ANS✅✅Standard Test Method For Temperature of Freshly
Mixed Hydraulic-Cement Concrete
The slump test is applicable to plastic concrete with a maximum size aggregate
of _____ . - ANS✅✅1½ in.
When the concrete contains aggregate larger than allowed for the slump test,
the large aggregate must be _____. - ANS✅✅Removed by wet sieving the
sample over 1½ in. sieve
The mold for making the slump test is in the shape of _____. - ANS✅✅The
frustum of a cone
The height of the slump mold is _____. - ANS✅✅12 in.
The interior surface of the slump mold is allowed to have minor irregularities.
True or False? - ANS✅✅False
For use in the slump test, the end or both ends of the tamping rod must be _____.
- ANS✅✅Rounded to a hemispherical tip
,The sample of concrete for use in making the slump test must be obtained in
accordance with ASTM Standard _____. - ANS✅✅C172, Standard Practice for
Sampling Freshly Mixed Concrete
The slump mold should be in a dry condition before beginning the test. True or
False? - ANS✅✅False
The surface on which the slump mold will be placed must be _____. -
ANS✅✅Flat, level, moist, nonabsorbent, and free of vibration
The slump mold is filled in _____ layers. - ANS✅✅3
Each layer should fill approximately _____ the volume of the mold. -
ANS✅✅One-third
The approximate concrete depth (in vertical distance) after placing the first layer
is _____, and the second layer is _____. - ANS✅✅2⅝ in. [70 mm], 6⅛ in. [160
mm]
What is the specified number of roddings for each layer? - ANS✅✅25
How deep should the tamping rod penetrate into each layer? - ANS✅✅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. - ANS✅✅Slightly inclined
What must be done if the concrete drops below the top of the slump mold while
the top layer is being rodded? - ANS✅✅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 _______. -
ANS✅✅The area surrounding the base of the mold
After the final rodding, the sides of the slump mold should be tapped lightly with
the tamping rod. True or False? - ANS✅✅False
When raising the slump mold, it should not be rotated or twisted. True or False? -
ANS✅✅True
How much time is allowed for lifting the slump mold? - ANS✅✅5 ± 2 seconds
The measurement for slump is made from the top of the mold to what point of
the concrete specimen? - ANS✅✅The displaced original center of the top
surface of the specimen
The sensor of the temperature measuring device shall be submerged a minimum
of ______ inches into the freshly mixed concrete. - ANS✅✅3"
