CONCRETE BATCH PLANT OPERATOR
EXAMINATION TEST 2026 FULL QUESTIONS
AND CORRECT ANSWERS
◉With how many strokes should you rod each layer of concrete placed
in the compressive strength TEST MOLD?
• 10
• 15
• 20
• 25 . Answer: 25
◉(True or False) The major factor controlling the durability of concrete
is its strength.
• True
• False . Answer: True
◉How is laitance produced in concrete?
• Water collects under the surface of the CEMENT
, • Cement is hydrated with saltwater
• Cement is hydrated with minimum water
• Cement is hydrated with excess water . Answer: Cement is hydrated
with excess water
◉What percent do water reducing admixtures usually reduce the
required water content for a concrete mixture?
• 1% to 2% only
• 1% to 3%
• 3% to 7%
• 5% to 10% . Answer: 5% to 10%
◉Concrete is denser and stronger when which condition is met?
• All voids are filled
• Voids are large and unfilled
• Aggregate particles are not solidly BONDED
• Aggregate particles are not coated with a cement-water paste .
Answer: All voids are filled
◉Before using warehouse-packed cement, what should you do to make
it free of lumps?
EXAMINATION TEST 2026 FULL QUESTIONS
AND CORRECT ANSWERS
◉With how many strokes should you rod each layer of concrete placed
in the compressive strength TEST MOLD?
• 10
• 15
• 20
• 25 . Answer: 25
◉(True or False) The major factor controlling the durability of concrete
is its strength.
• True
• False . Answer: True
◉How is laitance produced in concrete?
• Water collects under the surface of the CEMENT
, • Cement is hydrated with saltwater
• Cement is hydrated with minimum water
• Cement is hydrated with excess water . Answer: Cement is hydrated
with excess water
◉What percent do water reducing admixtures usually reduce the
required water content for a concrete mixture?
• 1% to 2% only
• 1% to 3%
• 3% to 7%
• 5% to 10% . Answer: 5% to 10%
◉Concrete is denser and stronger when which condition is met?
• All voids are filled
• Voids are large and unfilled
• Aggregate particles are not solidly BONDED
• Aggregate particles are not coated with a cement-water paste .
Answer: All voids are filled
◉Before using warehouse-packed cement, what should you do to make
it free of lumps?
