Computer · Concrete Technology
Read the statements of Assertion (A) and Reason (R) carefully and select the correct option. Assertion (A): It is not advisable to use immersion vibrators for concrete layer thickness greater than 600 mm. Reason (R): For effective consolidation, the depth of the concrete layer should be between 23 'l' to 'l' (where 'l' is the needle length), since excessive thickness reduces vibration effectiveness.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A is true, but R is false.
- 2Both A and R are true, and R is the correct explanation of A.✓
- 3Both A and R are true, but R is not the correct explanation of A.
- 4A is false, but R is true.
Correct answer
Both A and R are true, and R is the correct explanation of A.
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