APPROVED QUESTIONS AND CORRECT VERIFIED ANSWERS WITH
RATIONALES (DETAILED ANSWERS) LATEST UPDATED VERSION
|GUARANTEED PASS A+ |FULL REVISED CERTIFIED CONCRETE FINISHER
EXAM
1. What is the primary purpose of finishing concrete?
A) To increase the strength of the concrete
B) To improve the surface appearance and durability
C) To reduce the amount of cement needed
D) To prevent concrete from setting
Correct Answer: b) to improve the surface appearance and durability
Rationale: Finishing produces a smooth, durable, and visually appealing surface.
Strength is primarily determined by the mix, not finishing.
2. Which tool is typically used for floating concrete to remove surface
imperfections?
A) Trowel
B) Bull float
C) Edger
D) Rebar
Correct Answer: b) bull float
Rationale: Bull floats smooth the surface immediately after screening, removing
high/low spots.
,3. At what stage should you apply a curing compound to concrete?
A) Immediately after pouring
B) After concrete has set enough to resist damage from water
C) Only after finishing the concrete with a trowel
D) Only before placing reinforcement
Correct Answer: b) after concrete has set enough to resist damage from water
Rationale: Applying too early can seal in bleed water or damage the surface.
4. What is “bleed water” in freshly placed concrete?
A) Water that causes the concrete to crack
B) Water that rises to the surface as heavier materials settle
C) Water used for curing
D) Water mixed with concrete to make it more workable
Correct Answer: b) water that rises to the surface as heavier materials settle
Rationale: Bleed water is normal but should not be worked into the surface to
avoid weakening it.
5. Which factor most influences the workability of concrete?
A) Type of cement
B) Aggregate size
, C) Water-cement ratio
D) Ambient temperature
Correct Answer: c) water-cement ratio
Rationale: The water-cement ratio directly controls flow, placement, and strength.
6. When should you use an edger on concrete?
A) During initial screening
B) Immediately after bull floating, before concrete hardens
C) After curing
D) Only on vertical forms
Correct Answer: b) immediately after bull floating, before concrete hardens
Rationale: Edger’s prevent chipping by shaping the slab edges while still plastic.
7. What is the main purpose of control joints in concrete slabs?
A) To add decorative features
B) To control where cracks occur
C) To increase slab strength
D) To allow water to drain
Correct Answer: b) to control where cracks occur
Rationale: Control joints create planned weak points to guide shrinkage cracks.