利用非接触式电阻率新方法,研究普通硅酸盐水泥及粉煤灰和粉磨时间分别为1h、3h和4h的窑灰混掺后胶凝材料的水化特性.试验结果表明,窑灰分别粉磨1h、3h和4h后,在同样掺量情况下,对水泥浆体早期电阻率随时间的变化有明显的影响.高碱度和高Cl-、高SO3含量将直接影响到窑灰作为混合材或直接回窑后水泥的早期水化特性.不同掺量的粉煤灰在一定程度上可以平衡窑灰水泥浆体系中的碱,同时窑灰中的碱也可激发粉煤灰的早期活性,在熟料掺量小于50%时仍可获得较高的早期强度.
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