ACI CONCRETE STRENGTH TESTING
TECHNICIAN 2026 EXAM SCRIPT TEST PAPER
QUESTIONS AND SOLUTIONS GRADED A+
◉ Plates used for sulfur capping have a recessed area to hold sulfur
that cannot be more than _______ in. deep.
Answer: 1/2
◉ In all cases, plates shall be at least ________ in. greater in diameter
than the test specimen and the working surfaces shall not depart
from a plane by more than ________ in ________ inches.
Answer: 1, 0.002, 6
◉ Alignment devices ensure that the resulting caps are
perpendicular to the axis of the cylinder to within _____________°.
Answer: 0.5
◉ A pot with ___________________ _______________________ __________________
is required for melting and heating sulfur mortar.
Answer: automatic temperature control
◉ Never heat the melting pot over an ___________ ___________. The sulfur
pot must be located under a _________ to exhaust the fumes.
,Answer: open flame, hood
◉ Capping materials used on cylinders with an expected strength of
500 to 7000 psi must have a minimum strength of ________ psi or the
cylinder strength, whichever is greater.
Answer: 5,000
◉ To qualify sulfur mortar or gypsum used to test concretes with
strengths greater than _________ psi, that has a strength less than the
cylinder strength, the average strength of the cylinders capped with
the capping material must be at least _______ % of the average
strength of the companion cylinders.
Answer: 7,000, 98%
◉ All capping materials are tested for compressive strength using
______ in. cubes.
Answer: 2
◉ The strength of capping material are tested on receipt of a new lot
and at intervals at least every ______________ months.
Answer: 3
, ◉ Qualification tests of neat hydraulic cement paste are used to
determine proper ___________-___________ ________ and cap curing time
needed to achieve strength.
Answer: water-cement ratio
◉ For gypsum cement paste, a lower water-cement ratio will yield
________________ strength results, but the resulting mixture will be
___________ workable.
Answer: higher, less
◉ Use only _________ ___________ ___________ to cap freshly molded
cylinders.
Answer: neat cement paste
◉ Use a carpenter square across the top and down the side of the
cylinder to check that the difference between the highest point and
lowest point across the __________ of the cylinder is not more than
______ in.
Answer: end, 1/8
◉ When capping with high strength gypsum, place a conical mound
of paste on top of the _____________. Press an oiled _______________
____________ on top of the paste and apply downward pressure until
the plate contacts the top of the cylinder.
Answer:
TECHNICIAN 2026 EXAM SCRIPT TEST PAPER
QUESTIONS AND SOLUTIONS GRADED A+
◉ Plates used for sulfur capping have a recessed area to hold sulfur
that cannot be more than _______ in. deep.
Answer: 1/2
◉ In all cases, plates shall be at least ________ in. greater in diameter
than the test specimen and the working surfaces shall not depart
from a plane by more than ________ in ________ inches.
Answer: 1, 0.002, 6
◉ Alignment devices ensure that the resulting caps are
perpendicular to the axis of the cylinder to within _____________°.
Answer: 0.5
◉ A pot with ___________________ _______________________ __________________
is required for melting and heating sulfur mortar.
Answer: automatic temperature control
◉ Never heat the melting pot over an ___________ ___________. The sulfur
pot must be located under a _________ to exhaust the fumes.
,Answer: open flame, hood
◉ Capping materials used on cylinders with an expected strength of
500 to 7000 psi must have a minimum strength of ________ psi or the
cylinder strength, whichever is greater.
Answer: 5,000
◉ To qualify sulfur mortar or gypsum used to test concretes with
strengths greater than _________ psi, that has a strength less than the
cylinder strength, the average strength of the cylinders capped with
the capping material must be at least _______ % of the average
strength of the companion cylinders.
Answer: 7,000, 98%
◉ All capping materials are tested for compressive strength using
______ in. cubes.
Answer: 2
◉ The strength of capping material are tested on receipt of a new lot
and at intervals at least every ______________ months.
Answer: 3
, ◉ Qualification tests of neat hydraulic cement paste are used to
determine proper ___________-___________ ________ and cap curing time
needed to achieve strength.
Answer: water-cement ratio
◉ For gypsum cement paste, a lower water-cement ratio will yield
________________ strength results, but the resulting mixture will be
___________ workable.
Answer: higher, less
◉ Use only _________ ___________ ___________ to cap freshly molded
cylinders.
Answer: neat cement paste
◉ Use a carpenter square across the top and down the side of the
cylinder to check that the difference between the highest point and
lowest point across the __________ of the cylinder is not more than
______ in.
Answer: end, 1/8
◉ When capping with high strength gypsum, place a conical mound
of paste on top of the _____________. Press an oiled _______________
____________ on top of the paste and apply downward pressure until
the plate contacts the top of the cylinder.
Answer:
