abstract:Fineness modulus (FM) is defined as an empirical figure obtained by adding the total percentage of the sample of an aggregate retained on each of a specified series of sieves, and dividing the sum by 100. The sieve sizes are 150μ, 300μ, 600μ, 1.
Such assandnotclean (mud high content), sand the finenessmodulus too highortoolow, alsocanmake thestrengthof concrete is reduced, and the waterincreased.