| 赤泥基胶凝材料钙硅比对Na+固化性能的影响 |
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| 引用本文： | 孙文标,冯向鹏,易忠来.赤泥基胶凝材料钙硅比对Na+固化性能的影响[J].金属矿山,2008,38(6):130-138. |
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| 作者姓名： | 孙文标 冯向鹏 易忠来 |
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| 作者单位： | 1.河南工程学院；2.首钢总公司；3.清华大学 |
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| 基金项目： | 国家自然科学基金
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国家科技支撑计划 |
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| 摘 要： | 运用NMR、IR等分析手段，采用结构分析的方法研究了赤泥基胶凝材料的水化过程，揭示了胶凝材料钙硅比对水化产物Na+固化性能的影响规律。结果表明，随着钙硅比的降低，在Al对Si的取代作用下，［Si(Al)O4］结构单元聚合度增大，桥［SiO4］、［AlO4］四面体增多，Si以Q1、Q2结构形式存在的C-S-H凝胶转变为具有SiQ2、SiQ3和SiQ4结构单元的(Na,Al)-C-S-H凝胶，利于Na+以化学吸附和化学固溶形式的固化。
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| 关 键 词： | 赤泥基胶凝材料 Na+的固化 硅比 |
| 收稿时间： | 2008-04-10 |
| 修稿时间： | 2008年4月10日 |
Effect of Ca/Si Ratio of Red Mud-Based Cementing Material on Na+ Solidification Performance |
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| Sun Wenbiao,Feng Xiangpeng,Yi Zhonglai.Effect of Ca/Si Ratio of Red Mud-Based Cementing Material on Na+ Solidification Performance[J].Metal Mine,2008,38(6):130-138. |
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| Authors: | Sun Wenbiao Feng Xiangpeng Yi Zhonglai |
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| Affiliation: | 1.Henan Institute of Engineering；2.Shougang Group；3.Tsinghua University |
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| Abstract: | The hydration process of red mud-based cementing material is studied by NMR and IR means and by structural analysis method. The effect of Ca/Si ratio of red mud cementing material on the solidification performance of Na+ of hydration product is disclosed. The results show that with the decrease of Ca/Si Ratio, along with the substitution of Al for Si, the structural unit polymerization degree of ［Si(Al)O4］increases and ［SiO4］and ［AlO4］tetrahedra increase. Consequently, the C-S-H gel where Si occurs in Q1 and Q2 forms turns into (Na, Al)-C-S-H gel with SiQ2 , SiQ3 and SiQ4 structural units, benefiting the solidification of Na+ in forms of chemical adsorption and chemical sosoloid. |
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