· Pune. Oct 22, 2017. #1. Determination of Fineness of Fly Ash by Wet Sieving. As per IS 1727, you can check the fineness of Fly Ash by Wet sieving. Please find attached, format for determination of fineness of Fly Ash by wet sieving in 45 micron sieve. Fineness of fly ash affects the workability, water demand, and strength properties of concrete.
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