ACI Concrete Strength Testing
Technician Exam(2025)
Q&A
These procedures for capping enable concrete cylinders and cores to meet the
standard's requirements for _____ and ________. - answer-planeness and
perpendicularity
Equipment needed for the capping process includes capping ______, ______ devices,
and ________ pots. - answer-plates, alignment devices, and melting pots
Plates for neat cement and high strength gypsum plaster caps should me made of
_____, ______, _____, or ______. - answer-glass, metal, granite, or diabase
Sulfur mortar cap plates should be formed against _____ or _____ plates. - answer-
metal or stone
The purpose of the guide bar or bull's eye level is to ensure that caps remain
perpendicular to the axis of the cylinder within .5 degrees. True or False - answer-True
To avoid accidents during reheating of cooled sulfur, use melting pots that have
_______ _______. - answer-peripheral heating
The technician should use a stiff layer of _____ ____ _____ to cap fresh concrete
cylinders. - answer-neat cement paste
Hardened concrete cylinders should be capped with ______, _______, or _______. -
answer-high strength gyp paste, neat cement paste, or sulfur mortar
Plaster of paris and mixtures of plaster of paris and portland cement are examples of
suitable high-strength plasters. True or False - answer-False
Sulfur mortars and high-strength gypsum cement tubes must demonstrate a minimum
compressive strength of _____ or ______, whichever is greater. - answer-5000 PSI or
the cylinder strength
The cement paste should be applied to the freshly molded cylinder from _____ to _____
hours after molding. This allows for ______ of the concrete specimen. - answer-2 to 4
hours, to allow for settling of the specimen
Technician Exam(2025)
Q&A
These procedures for capping enable concrete cylinders and cores to meet the
standard's requirements for _____ and ________. - answer-planeness and
perpendicularity
Equipment needed for the capping process includes capping ______, ______ devices,
and ________ pots. - answer-plates, alignment devices, and melting pots
Plates for neat cement and high strength gypsum plaster caps should me made of
_____, ______, _____, or ______. - answer-glass, metal, granite, or diabase
Sulfur mortar cap plates should be formed against _____ or _____ plates. - answer-
metal or stone
The purpose of the guide bar or bull's eye level is to ensure that caps remain
perpendicular to the axis of the cylinder within .5 degrees. True or False - answer-True
To avoid accidents during reheating of cooled sulfur, use melting pots that have
_______ _______. - answer-peripheral heating
The technician should use a stiff layer of _____ ____ _____ to cap fresh concrete
cylinders. - answer-neat cement paste
Hardened concrete cylinders should be capped with ______, _______, or _______. -
answer-high strength gyp paste, neat cement paste, or sulfur mortar
Plaster of paris and mixtures of plaster of paris and portland cement are examples of
suitable high-strength plasters. True or False - answer-False
Sulfur mortars and high-strength gypsum cement tubes must demonstrate a minimum
compressive strength of _____ or ______, whichever is greater. - answer-5000 PSI or
the cylinder strength
The cement paste should be applied to the freshly molded cylinder from _____ to _____
hours after molding. This allows for ______ of the concrete specimen. - answer-2 to 4
hours, to allow for settling of the specimen
