ACI Concrete Strength Testing Technician CP-19 (14)-25 Latest Update 2025-2026 175 Questions and 100% Verified Correct Answers Guaranteed A+
_____ the pot and recharge with fresh material at intervals to insure that the oldest
material in the pot has not been used more than _____ times. - CORRECT ANSWER:
Empty, 5
A higher rate of loading shall be permitted during the application of the first half of the
anticipated loading phase. True or False? - CORRECT ANSWER: True
A slight twisting action will help eliminate _____ and air _____ when the capping plate is
placed onto the mound of the paste. - CORRECT ANSWER: Excess paste, voids
After application of the load, but before reaching _____ of the anticipated specimen strength, check to see that the axis of the cylinder does not depart from vertical by more
than _____. - CORRECT ANSWER: 10%, 0.5 degrees
Align the _____ of the specimen with the _____ of thrust of the spherically seated block.
- CORRECT ANSWER: Axis, center
Apply the load ____ and without ____. - CORRECT ANSWER: Continuously, shock
Bearing blocks used in the _____ method must ensure that forces applied to the beam will be perpendicular to the face of the specimen and applied without eccentricity. -
CORRECT ANSWER: Third-point loading
Calculate the compressive strength by dividing the _____ by the average _____ area determined. - CORRECT ANSWER: Maximum load, cross-sectional 1 / 3
Depressions in the ends of the cylinders that exceed ____ must be corrected by sawing
or grinding prior to testing. - CORRECT ANSWER: .20 in.
Discard the test results when the fracture occurs in which of these instances:
- outside the middle third of the span length but by less than 5% of the span length.
- outside the middle third of the span length by more the 5% of the span length
c) within the middle third of the span length - CORRECT ANSWER: b)
During the testing, if suitable contact is not made between the specimen and bearing
block surfaces, _____, _____ or _____ may be required. - CORRECT ANSWER: Use of
shims, grinding, capping
Equipment needed for the capping process includes capping _____ , _____devices,
and ______ pots. - CORRECT ANSWER: Plates, alignment, melting
Hand operated machines have pumps that do not provide a continuous loading in one
stroke are not permitted. True or False? - CORRECT ANSWER: True
Hardened concrete cylinders should be capped with _____, _____ or _____. -
CORRECT ANSWER: High-strength gypsum paste, neat cement paste, or sulfur mortar
Hydrogen sulfide gas, which may be produced during capping, may be _____, _____,
_____, _____ and _____. - CORRECT ANSWER: Lethal, nausea, stomach distress,
dizziness, headache, irritation of the eyes.
If a fracture occurs at a capped section, you should not include the thickness of the cap in your calculations. True or False? - CORRECT ANSWER: False, include cap thickness
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if a new neoprene pad with a Shore A durometer hardness of 50 is intended to test concrete cylinders with anticipated compressive strengths between 1500 and 6000 psi (10 and 40 MPa), it may be used "as is" from the manufacturer without further
qualification testing. True or False? - CORRECT ANSWER: True
If cylinders have been made from a single lot of molds which consistently produce nearly the same sized specimens, the number of individual cylinders measured is not prohibited from being ____ to one for each ten specimens or _____ per day whichever
is greater. - CORRECT ANSWER: Reduced, Three
In relation to the applied force, the loading system should be centered during the
procedure. True or False? - CORRECT ANSWER: True
It is acceptable to use leather shims only when the gap between the specimen _____ in
contact with the blocks is not _____ 0.015 inches. - CORRECT ANSWER: Surface,
more than
Neat cement paste caps should not be used on dry specimens because the caps may
_____ and _____ when dry. - CORRECT ANSWER: Shrink, crack
Neither end of the cylinder shall depart from perpendicularity by more than _____. -
CORRECT ANSWER: 0.5 degrees
Pads that have cracks or splits exceeding ______ in _____ regardless of their _____
must be replaced. - CORRECT ANSWER: 3/8 in., length, depth
Plaster of paris and mixtures of plaster of paris and portland cement are examples of
suitable high strength plasters. True or False? - CORRECT ANSWER: False
Plates for neat cement and high strength gypsum plaster caps should be made of
_____, _____, _____ or _____. - CORRECT ANSWER: Glass, metal granite or diabase
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