Abstract:

Abstract: According to the physical and chemical properties of fly ash and its active principle excited to iron ore tailings as aggregate, fly ash and ordinary portland cement clinker cementitious materials to uniaxial compressive strength for different ages indicators, research tailings backfill way to stimulate activity in the fly ash, to determine the physical and chemical inspire inspire inspire ways of combining complex. Complex ways to stimulate and inspire experimental verification of the physical and chemical excited about the combination could increase the intensity of 40%. Clearly the best way to stimulate the composite ash grinding 20 minutes, mixed with activator ratio of calcined gypsum 2: Na2SO4 0.1: CaCl2 0.2: Na2CO3 0.2.

Key words: Fly Ash, Activation, Uniaxial Compressive Strength