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助磨剂对钢渣细度和活性的影响
作者:冯春花 李东旭 苗琛 王小鹏  
单位:南京工业大学材料科学与工程学院材料化学工程国家重点实验室  
关键词:钢渣  物理激发  化学激发  活性  胶凝材料 
分类号:TF703.6
出版年,卷(期):页码:2010,38(7):1160-1166
DOI:
摘要:

探讨了化学激发和物理激发对钢渣活性的影响,阐述了钢渣活性化学激发机理和物理激发机理,对掺加了4种助磨剂后粉磨钢渣的活性进行了研究,并通过X射线衍射、扫描电子显微镜、压汞法等现代物相检测手段揭示微观结构与宏观性能之间的内在联系。结果表明:通过2种激发手段的综合效应,能够利用钢渣制备出高活性的辅助性胶凝材料;钢渣最适宜的粉磨时间为60min;助磨剂A(三乙醇胺、乙二醇与去离子水的复配,其复配质量比为7:3:10)的激发效果最好,钢渣作为一种高活性的辅助性胶凝材料,在水泥中的掺量可以达到30%;添加钢渣后,水泥的28d强度得到提高。

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The mechanism of mechanical activation and chemical activation of steel slag was discussed.The effects of mechanical activation and chemical activation on the activity of steel slag were investigated.The grinding efficiency of steel slag by using four grinding aids was also analyzed.The internal relation between the microstructure and macroscopic properties of steel slag and cement were investigated by X-ray diffraction,scanning electron microscopy,mercury porosimeter method and other modern analysis techniques.The results show that it is possible to prepare the high-activity supplementary cementing materials using steel slag.The optimum grinding time of steel slag is 60 min.The addition of grinding aids into the grinding of steel slag could increase the product fineness.The cement compressive strength at 28 d could be improved after adding the finer particles of steel slag ground.The best grinding aid was grinding aid A(mixed with triethanolamine,glycol,deionized water,mass ratio is 7:3:10).The ground steel slag as a high-activity supplementary cementing material could be used by the content of 30% in cement.

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基金项目:
国家“973”计划(2009CB623104)资助项目
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参考文献:

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