ACI CONCRETE STRENGTH TESTING
TECHNICIAN 2026 CERTIFICATION
EVALUATION EXAMS COMPLETE QUESTIONS
AND ANSWERS
◉ 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:
◉ Prepare sulfur mortar for use in capping by heating to a
temperature between ________and _________°F.
Answer: 265, 295
◉ Sulfur can be reused if the cylinders previously tested had
strengths less than ________ psi. The oldest material in the pot shall
not be used more than ________ times.
Answer: 5,000, 5
◉ Check the temperature at approximately__________ intervals during
capping.
Answer: 1 hour
◉ The capping plate or device shall be warmed before use. This will
cause the sulfur to _____________ ______________ and the resulting cap will
be ________________.
TECHNICIAN 2026 CERTIFICATION
EVALUATION EXAMS COMPLETE QUESTIONS
AND ANSWERS
◉ 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:
◉ Prepare sulfur mortar for use in capping by heating to a
temperature between ________and _________°F.
Answer: 265, 295
◉ Sulfur can be reused if the cylinders previously tested had
strengths less than ________ psi. The oldest material in the pot shall
not be used more than ________ times.
Answer: 5,000, 5
◉ Check the temperature at approximately__________ intervals during
capping.
Answer: 1 hour
◉ The capping plate or device shall be warmed before use. This will
cause the sulfur to _____________ ______________ and the resulting cap will
be ________________.
