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Q: The fineness of fly ash is a measure of percentage retained on ______-micron sieve when a sample is sieved through it
  • A. 45
  • B. 65
  • C. 85
  • D. 25
Correct Answer: Option A - As per IS:3812, Fineness of fly Ash- The fineness of fly ash assessed through both dry and wet sieving as per ASTM standards, involves sieving the sample in a 45-micron sieve and calculating the percentage retained.
A. As per IS:3812, Fineness of fly Ash- The fineness of fly ash assessed through both dry and wet sieving as per ASTM standards, involves sieving the sample in a 45-micron sieve and calculating the percentage retained.

Explanations:

As per IS:3812, Fineness of fly Ash- The fineness of fly ash assessed through both dry and wet sieving as per ASTM standards, involves sieving the sample in a 45-micron sieve and calculating the percentage retained.