ACI CONCRETE STRENGTH TESTING
TECHNICIAN COMPREHENSIVE EXAMINATION
TEST 2026 SOLVED QUESTIONS ANSWERS
GRADED A+
◉ Equipment needed for the capping process includes capping _____ ,
_____devices, and ______ pots.
Answer: Plates, alignment, melting
◉ Plates for neat cement and high strength gypsum plaster caps
should be made of _____, _____, _____ or _____.
Answer: Glass, metal granite or diabase
◉ Sulfur mortar cap plates should be formed against _____ or _____
plates.
Answer: Metal, 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 0.5
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 gypsum 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 cubes must
demonstrate a minimum compressive strength of _____ or ___ __,
whichever is greater.
Answer: 35MPa (5000 psi), the cylinder strength
, ◉ The cement paste should be applied to the freshly molded
cylinder from _____ to _____ hours after molding. This is to allow for
_____ of the concrete specimen.
Answer: 2,4, settling
◉ The strength of the paste depends on:
a) the water-cement ratio
b) time
c) the equipment used
d) type of cement
Answer: a, b and d
◉ A slight twisting action will help eliminate _____ and air _____ when
the capping plate is placed onto the mound of the paste.
Answer: Excess paste, voids
◉ Neat cement paste caps should not be used on dry specimens
because the caps may _____ and _____ when dry.
Answer: Shrink, crack
◉ The technician should remove all _____ or _____ materials from the
ends of hardened concrete cylinders before capping
Answer: Oily, waxy
TECHNICIAN COMPREHENSIVE EXAMINATION
TEST 2026 SOLVED QUESTIONS ANSWERS
GRADED A+
◉ Equipment needed for the capping process includes capping _____ ,
_____devices, and ______ pots.
Answer: Plates, alignment, melting
◉ Plates for neat cement and high strength gypsum plaster caps
should be made of _____, _____, _____ or _____.
Answer: Glass, metal granite or diabase
◉ Sulfur mortar cap plates should be formed against _____ or _____
plates.
Answer: Metal, 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 0.5
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 gypsum 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 cubes must
demonstrate a minimum compressive strength of _____ or ___ __,
whichever is greater.
Answer: 35MPa (5000 psi), the cylinder strength
, ◉ The cement paste should be applied to the freshly molded
cylinder from _____ to _____ hours after molding. This is to allow for
_____ of the concrete specimen.
Answer: 2,4, settling
◉ The strength of the paste depends on:
a) the water-cement ratio
b) time
c) the equipment used
d) type of cement
Answer: a, b and d
◉ A slight twisting action will help eliminate _____ and air _____ when
the capping plate is placed onto the mound of the paste.
Answer: Excess paste, voids
◉ Neat cement paste caps should not be used on dry specimens
because the caps may _____ and _____ when dry.
Answer: Shrink, crack
◉ The technician should remove all _____ or _____ materials from the
ends of hardened concrete cylinders before capping
Answer: Oily, waxy
