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高钙粉煤灰的安定性特征与改性技术研究
Study on Soundness Character and Technique for Activating High-calcium Fly Ash
【摘要】 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;XRD分析发现其中存在托贝莫来石和C3S等活性矿物;F-CAO较多存在于大颗粒中,将其磨细后F-CAO减少;采用工业废石灰、煅烧磷及无机盐激发剂,加上短时粉磨处理以激发高钙灰,可显著改善其安定性,活性指标可达到S95矿渣粉水平。
【Abstract】 Analyze of micrograph and particle diameter distribution present that particle diameter of high-calcium fly ash distributes unequally.XRD analysis shows that there are actire minerals such as Tobermorite and C3S.Tile results show that more f-CaO exists in big particle,and the content of f-CaO would fall by grinding.If industry wastes lime,calcined gypsum and sulfate are grinded with the high-calcium fly ash,activity increases,soundness improves,and activity index can meets the demand for S95slag.
【关键词】 高钙粉煤灰;
安定性;
改性;
活性指数;
【Key words】 high-calcium fly ash; soundness; modification; activity index;
【Key words】 high-calcium fly ash; soundness; modification; activity index;
【基金】 湖北省科攻关项目(200410G0121)
- 【文献出处】 粉煤灰综合利用 ,Fly Ash Comprehensive Utilization , 编辑部邮箱 ,2006年01期
- 【分类号】TU521.4
- 【被引频次】9
- 【下载频次】213