Abstract
Coal fly ash-water mixtures show flocked state, viscoid state and fluid state. In this study, the effects of water mixing ratio on its strength properties of slurried coal fly ashes were investigated by conducting triaxial compression test. The strength properties of slurried coal fly ash strongly depend on water mixing ratio. It was clarified that the optimum water mixing ratio exists for mobilizing shear strength. The consistency indexes proposed by the authors are useful for estimating the optimum water mixing ratio. And the simple quality control method by the fall cone test is proposed to set the optimum water condition of coal fly ash.
