ACI Concrete Field Testing Technician- Grade I
Version 1 Actual Exam Newest 2026/2027 With
Complete Questions And Correct Detailed Answers|
Latest Update!!
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]
In rodding the sample, how deep should the rod penetrate
each layer? - ANSWER-Rod bottom layer to full depth; rod
second and final layer penetrating the previous layer about
25 mm (1 in.)
After rodding each layer, what should be done to the
measure before adding another layer of concrete? -
,ANSWER-Tap the sides of the measure smartly 10 to 15
times with the mallet
When consolidating the concrete by vibration, how many
times should the vibrator be inserted into each layer? -
ANSWER-Three (3)
What tools may be used to strike off the top surface of the
concrete following consolidation of the final layer? -
ANSWER-A strike-off bar; a metal, glass, or acrylic plate
What must be done if there is a slight deficiency in the
quantity of concrete in the measure of consolidation of
,final layer? - ANSWER-Add a quantity of representative
concrete before strike off
What must be done if there is an excessive amount of
concrete in measure following consolidation of the final
layer? - ANSWER-Remove a representative quantity of
concrete with the scoop or trowel before the strike off
The volumetric method of determining air content of
concrete can be used on concrete containing what types
of aggregate? - ANSWER-All types of aggregate
What are the requirements for the tamping rod used in the
test method? - ANSWER-Round, straight 5/8 [16 mm] +-
, 1/16 in. [2 mm] diameter rod at least 5 in. [300 mm]
greater in length than the depth of the bowl being used,
with the tamping end rounded to a hemispherical tip of the
same diameter, made of steel, high-density polyethylene,
or other plastic of equal or greater abrasion resistance.
What are the requirements for the strike-off bar used in
this test method? - ANSWER-Flat, straight steel bar at
least 1/8 by 3/4 by 12 in. [3 by 20 by 300 mm] or a 4.4 flat,
straight high-density polyethylene bar, or other plastic of
equal or greater abrasion resistance, at least 1/4 by 3/4 by
23 in [6 by 30 by 300 mm].
Version 1 Actual Exam Newest 2026/2027 With
Complete Questions And Correct Detailed Answers|
Latest Update!!
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]
In rodding the sample, how deep should the rod penetrate
each layer? - ANSWER-Rod bottom layer to full depth; rod
second and final layer penetrating the previous layer about
25 mm (1 in.)
After rodding each layer, what should be done to the
measure before adding another layer of concrete? -
,ANSWER-Tap the sides of the measure smartly 10 to 15
times with the mallet
When consolidating the concrete by vibration, how many
times should the vibrator be inserted into each layer? -
ANSWER-Three (3)
What tools may be used to strike off the top surface of the
concrete following consolidation of the final layer? -
ANSWER-A strike-off bar; a metal, glass, or acrylic plate
What must be done if there is a slight deficiency in the
quantity of concrete in the measure of consolidation of
,final layer? - ANSWER-Add a quantity of representative
concrete before strike off
What must be done if there is an excessive amount of
concrete in measure following consolidation of the final
layer? - ANSWER-Remove a representative quantity of
concrete with the scoop or trowel before the strike off
The volumetric method of determining air content of
concrete can be used on concrete containing what types
of aggregate? - ANSWER-All types of aggregate
What are the requirements for the tamping rod used in the
test method? - ANSWER-Round, straight 5/8 [16 mm] +-
, 1/16 in. [2 mm] diameter rod at least 5 in. [300 mm]
greater in length than the depth of the bowl being used,
with the tamping end rounded to a hemispherical tip of the
same diameter, made of steel, high-density polyethylene,
or other plastic of equal or greater abrasion resistance.
What are the requirements for the strike-off bar used in
this test method? - ANSWER-Flat, straight steel bar at
least 1/8 by 3/4 by 12 in. [3 by 20 by 300 mm] or a 4.4 flat,
straight high-density polyethylene bar, or other plastic of
equal or greater abrasion resistance, at least 1/4 by 3/4 by
23 in [6 by 30 by 300 mm].
