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Q: Which of the following is best suited for the compaction of concrete in rigid pavements?
  • A. Screed board vibrator
  • B. Table vibrator
  • C. Needle vibrator
  • D. Formwork vibrator
Correct Answer: Option A - Screed Board Vibrator is best suitable for the compaction of concrete in rigid pavement. • Screed board vibrator is used to vibrate the concrete to give a compact and leveled surface, these vibrator are self-travelling and only require guiding along formwork, dragged at end by two operators without working in the concrete.
A. Screed Board Vibrator is best suitable for the compaction of concrete in rigid pavement. • Screed board vibrator is used to vibrate the concrete to give a compact and leveled surface, these vibrator are self-travelling and only require guiding along formwork, dragged at end by two operators without working in the concrete.

Explanations:

Screed Board Vibrator is best suitable for the compaction of concrete in rigid pavement. • Screed board vibrator is used to vibrate the concrete to give a compact and leveled surface, these vibrator are self-travelling and only require guiding along formwork, dragged at end by two operators without working in the concrete.