NRMCA Concrete Technologist Level 4 Certification Exam QUESTIONS AND CORRECT
ANSWERS WITH RATIONALES
Exam coverage
• concrete durability
• environmental exposure
• permeability
• air-void systems
• cementitious materials
• mixture durability
• cracking and distress
• quality control
• troubleshooting
• durability specifications
,1. Which choice correctly identifies the main reason that Durability design considers
exposure conditions, materials, mixture characteristics, curing, and service
environment.. Which answer best applies to the underlying NRMCA technologist level 4
concept in this situation?
A. Durability design considers exposure conditions, materials, mixture characteristics, curing,
and service environment..
B. Air-void systems are important for concrete exposed to repeated freezing and thawing..
C. Cementitious materials influence hydration, permeability, heat development, strength, and
durability..
D. Permeability affects the movement of water and aggressive substances into hardened
concrete..
Correct answer: A
Rationale: The correct choice directly states the governing principle: Durability design
considers exposure conditions, materials, mixture characteristics, curing, and service
environment.. The alternatives address related topics but do not directly answer the issue
being tested.
2. When reviewing this equipment, which statement best applies because Permeability
affects the movement of water and aggressive substances into hardened concrete..
Which answer best applies to the underlying NRMCA technologist level 4 concept in
this situation?
,A. Durable mixtures balance water-cementitious ratio, materials, air, curing, and exposure
requirements..
B. Permeability affects the movement of water and aggressive substances into hardened
concrete..
C. Cementitious materials influence hydration, permeability, heat development, strength, and
durability..
D. Air-void systems are important for concrete exposed to repeated freezing and thawing..
Correct answer: B
Rationale: The correct choice directly states the governing principle: Permeability affects the
movement of water and aggressive substances into hardened concrete.. The alternatives
address related topics but do not directly answer the issue being tested.
3. A supervisor asks which practice should guide the work when Air-void systems are
important for concrete exposed to repeated freezing and thawing.. Which answer best
applies to the underlying NRMCA technologist level 4 concept in this situation?
A. Durable mixtures balance water-cementitious ratio, materials, air, curing, and exposure
requirements..
B. Cementitious materials influence hydration, permeability, heat development, strength, and
durability..
C. Cracking can result from thermal effects, drying shrinkage, restraint, structural behavior, or
other mechanisms..
, D. Air-void systems are important for concrete exposed to repeated freezing and thawing..
Correct answer: D
Rationale: The correct choice directly states the governing principle: Air-void systems are
important for concrete exposed to repeated freezing and thawing.. The alternatives address
related topics but do not directly answer the issue being tested.
4. Which explanation best connects the technical requirement with its practical purpose
when Cementitious materials influence hydration, permeability, heat development,
strength, and durability.. Which answer best applies to the underlying NRMCA
technologist level 4 concept in this situation?
A. Durability quality control includes material verification, proportioning, testing, placement,
and curing..
B. Cementitious materials influence hydration, permeability, heat development, strength, and
durability..
C. Durable mixtures balance water-cementitious ratio, materials, air, curing, and exposure
requirements..
D. Cracking can result from thermal effects, drying shrinkage, restraint, structural behavior, or
other mechanisms..
Correct answer: B
Rationale: The correct choice directly states the governing principle: Cementitious materials
influence hydration, permeability, heat development, strength, and durability.. The alternatives
ANSWERS WITH RATIONALES
Exam coverage
• concrete durability
• environmental exposure
• permeability
• air-void systems
• cementitious materials
• mixture durability
• cracking and distress
• quality control
• troubleshooting
• durability specifications
,1. Which choice correctly identifies the main reason that Durability design considers
exposure conditions, materials, mixture characteristics, curing, and service
environment.. Which answer best applies to the underlying NRMCA technologist level 4
concept in this situation?
A. Durability design considers exposure conditions, materials, mixture characteristics, curing,
and service environment..
B. Air-void systems are important for concrete exposed to repeated freezing and thawing..
C. Cementitious materials influence hydration, permeability, heat development, strength, and
durability..
D. Permeability affects the movement of water and aggressive substances into hardened
concrete..
Correct answer: A
Rationale: The correct choice directly states the governing principle: Durability design
considers exposure conditions, materials, mixture characteristics, curing, and service
environment.. The alternatives address related topics but do not directly answer the issue
being tested.
2. When reviewing this equipment, which statement best applies because Permeability
affects the movement of water and aggressive substances into hardened concrete..
Which answer best applies to the underlying NRMCA technologist level 4 concept in
this situation?
,A. Durable mixtures balance water-cementitious ratio, materials, air, curing, and exposure
requirements..
B. Permeability affects the movement of water and aggressive substances into hardened
concrete..
C. Cementitious materials influence hydration, permeability, heat development, strength, and
durability..
D. Air-void systems are important for concrete exposed to repeated freezing and thawing..
Correct answer: B
Rationale: The correct choice directly states the governing principle: Permeability affects the
movement of water and aggressive substances into hardened concrete.. The alternatives
address related topics but do not directly answer the issue being tested.
3. A supervisor asks which practice should guide the work when Air-void systems are
important for concrete exposed to repeated freezing and thawing.. Which answer best
applies to the underlying NRMCA technologist level 4 concept in this situation?
A. Durable mixtures balance water-cementitious ratio, materials, air, curing, and exposure
requirements..
B. Cementitious materials influence hydration, permeability, heat development, strength, and
durability..
C. Cracking can result from thermal effects, drying shrinkage, restraint, structural behavior, or
other mechanisms..
, D. Air-void systems are important for concrete exposed to repeated freezing and thawing..
Correct answer: D
Rationale: The correct choice directly states the governing principle: Air-void systems are
important for concrete exposed to repeated freezing and thawing.. The alternatives address
related topics but do not directly answer the issue being tested.
4. Which explanation best connects the technical requirement with its practical purpose
when Cementitious materials influence hydration, permeability, heat development,
strength, and durability.. Which answer best applies to the underlying NRMCA
technologist level 4 concept in this situation?
A. Durability quality control includes material verification, proportioning, testing, placement,
and curing..
B. Cementitious materials influence hydration, permeability, heat development, strength, and
durability..
C. Durable mixtures balance water-cementitious ratio, materials, air, curing, and exposure
requirements..
D. Cracking can result from thermal effects, drying shrinkage, restraint, structural behavior, or
other mechanisms..
Correct answer: B
Rationale: The correct choice directly states the governing principle: Cementitious materials
influence hydration, permeability, heat development, strength, and durability.. The alternatives
