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CONCRETE OPERATIONS QUESTIONS WITH CORRECT ANSWERS 2026

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CONCRETE OPERATIONS QUESTIONS WITH CORRECT ANSWERS 2026

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CONCRETE OPERATIONS QUESTIONS
WITH CORRECT ANSWERS 2026
Batching - CORRECT ANSWER -
process of measuring concrete mix ingredients by either mass or volume and introducing them i
nto mixing water



Mixing times - CORRECT ANSWER -1 minute plus 15 seconds for each additional cubic yard



Central-mixed concrete - CORRECT ANSWER -
mixed conpletely in a station mixer, delivered in a truck agitator



Shrink-mixed concrete - CORRECT ANSWER -
mixed partially in a stationary mixer and completed in a truck mixer



Truck-mixed concrete - CORRECT ANSWER -mixed completely in a truck mixer



Consequences of mixing at high speeds - CORRECT ANSWER -
strength loss, temperature rise, excessive loss of entrained air, accelerated slump loss



Mobile batcher mixer - CORRECT ANSWER -
advantages: combined materials transporter and batching and mixing system. one man

Disadvantage: material must be identical to those in original mix design



Water may be added at jobsite provided - CORRECT ANSWER -
w/c ratio is not exceeded, slump is not less than specified, allowable mixing and agitating time ar
e not exceeded, concrete is remixed



Non-agitating truck - CORRECT ANSWER -short hauls over smooth roadways

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