Page 1 of 86
Certified Concrete Finisher Exam ALL 200
QUESTIONS AND CORRECT ANSWERS
LATEST UPDATE THIS YEAR
BATCH 1
1. Which cement type is most commonly used for general concrete construction?
A. Type II
B. Type III
C. Type I
D. Type V
Answer: C
Rationale: Type I Portland cement is used for most general-purpose concrete work.
2. What effect does a lower water-cement ratio have on concrete?
A. Decreases strength
B. Increases permeability
C. Improves durability and strength
D. Causes segregation
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Answer: C
Rationale: Lower water-cement ratios produce denser, stronger, and more durable concrete.
3. What is the primary purpose of air-entraining admixtures?
A. Speed up setting
B. Improve freeze-thaw resistance
C. Increase color uniformity
D. Reduce cement usage
Answer: B
Rationale: Air entrainment creates microscopic air bubbles that protect concrete from freeze-
thaw damage.
4. Which test is commonly used to determine concrete compressive strength?
A. Slump test
B. Air content test
C. Cylinder compression test
D. Penetration resistance test
Answer: C
Rationale: Cylinders are tested in compression to determine concrete strength.
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5. What finishing tool produces a smooth, dense surface on hardened concrete?
A. Magnesium float
B. Wood float
C. Steel trowel
D. Broom
Answer: C
Rationale: Steel troweling creates a hard, smooth finish.
6. What condition most increases the risk of plastic shrinkage cracking?
A. Low humidity and high wind
B. Cool temperatures
C. High aggregate content
D. Proper curing
Answer: A
Rationale: Rapid surface moisture loss causes plastic shrinkage cracks.
7. Why are control joints installed in concrete slabs?
A. Increase load capacity
B. Improve appearance
C. Control crack locations
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D. Reduce curing time
Answer: C
Rationale: Control joints create planned weak points where cracking can occur neatly.
8. What is the typical maximum recommended slump for floor slabs?
A. 1 inch
B. 2 inches
C. 4 inches
D. 7 inches
Answer: C
Rationale: Around 4 inches provides workable concrete without excessive water.
9. Which finishing operation embeds coarse aggregate below the surface?
A. Screeding
B. Bull floating
C. Edging
D. Brooming
Answer: B
Rationale: Bull floating pushes aggregate down and levels the surface.
4
Certified Concrete Finisher Exam ALL 200
QUESTIONS AND CORRECT ANSWERS
LATEST UPDATE THIS YEAR
BATCH 1
1. Which cement type is most commonly used for general concrete construction?
A. Type II
B. Type III
C. Type I
D. Type V
Answer: C
Rationale: Type I Portland cement is used for most general-purpose concrete work.
2. What effect does a lower water-cement ratio have on concrete?
A. Decreases strength
B. Increases permeability
C. Improves durability and strength
D. Causes segregation
1
, Page 2 of 86
Answer: C
Rationale: Lower water-cement ratios produce denser, stronger, and more durable concrete.
3. What is the primary purpose of air-entraining admixtures?
A. Speed up setting
B. Improve freeze-thaw resistance
C. Increase color uniformity
D. Reduce cement usage
Answer: B
Rationale: Air entrainment creates microscopic air bubbles that protect concrete from freeze-
thaw damage.
4. Which test is commonly used to determine concrete compressive strength?
A. Slump test
B. Air content test
C. Cylinder compression test
D. Penetration resistance test
Answer: C
Rationale: Cylinders are tested in compression to determine concrete strength.
2
, Page 3 of 86
5. What finishing tool produces a smooth, dense surface on hardened concrete?
A. Magnesium float
B. Wood float
C. Steel trowel
D. Broom
Answer: C
Rationale: Steel troweling creates a hard, smooth finish.
6. What condition most increases the risk of plastic shrinkage cracking?
A. Low humidity and high wind
B. Cool temperatures
C. High aggregate content
D. Proper curing
Answer: A
Rationale: Rapid surface moisture loss causes plastic shrinkage cracks.
7. Why are control joints installed in concrete slabs?
A. Increase load capacity
B. Improve appearance
C. Control crack locations
3
, Page 4 of 86
D. Reduce curing time
Answer: C
Rationale: Control joints create planned weak points where cracking can occur neatly.
8. What is the typical maximum recommended slump for floor slabs?
A. 1 inch
B. 2 inches
C. 4 inches
D. 7 inches
Answer: C
Rationale: Around 4 inches provides workable concrete without excessive water.
9. Which finishing operation embeds coarse aggregate below the surface?
A. Screeding
B. Bull floating
C. Edging
D. Brooming
Answer: B
Rationale: Bull floating pushes aggregate down and levels the surface.
4
