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Fly Ash How To Add To Concrete Coalcrushing Equipment

Nov 30, 2007 Currently, more than 50 of the concrete placed in the U.S. contains fly ash. Dosage rates vary depending on the type of fly ash and its reactivity level. Typically, Class F fly ash is used at dosages of 15 to 25 by mass of cementitious material and Class C fly ash at 15 to 40.

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