若干物料中fCaO的微观结构及水化活性

Research on the Microstructure and Hydration Activity of f CaO in Some Materials

通过测定掺不同高游离氧化钙物料水泥浆体的膨胀率、各龄期硬化水泥浆体中氧化钙ＸＲＤ衍射峰峰强及不同物料中游离氧化钙的微观结构、晶格畸变，可以得出结论：不同物料中游离氧化钙的水化活性是不同的，且高钙粉煤灰中游离氧化钙的水化活性＞ 熟料中游离氧化钙的水化活性＞ 钢渣中游离氧化钙的水化活性．

Through the measurements of free linear expansion rate of specimens containing cement mixed with different kinds of high f CaO materials at various curing periods, the XRD peaks of CaO, the crystal dimension and lattice distortion of f CaO in different materials, a conclusion is drawn that the hydration activity of f CaO in different materials are different, the hydration activity of f CaO in high calcium fly ash (HCFA) is larger than that of f CaO in high free oxide calcium clinker (HFOCC), and also larger than that of f CaO in rotate furnace steel slag (RFSS). Considering the difference of hydration activity among those materials, it is suggested that different modification technique should be used to realize the goal of high value, high effective usage of such high f CaO materials.