Analyze of micrograph and particle diameter distribution present that particle diameter of high-calciumflyash distributes unequally.
显微图象及粉体颗粒粒径分布分析显示，高钙灰的颗粒分布呈不均质性；
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If industry wastes lime, calcined gypsum and sulfate are grinded with the high-calciumflyash, activity increases, soundness improves, and activity index can meets the demand for S95slag.
The relationship between the intrinsic characteristics and the hydration properties of flyash with highcalcium oxide was studied through experiment in this research.