| [Si(Al)O_4]四面体聚合度对Na~+固化性能的影响 |
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| 引用本文： | 孙文标,冯向鹏.[Si(Al)O_4]四面体聚合度对Na~+固化性能的影响[J].机械工程材料,2009,33(6). |
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| 作者姓名： | 孙文标 冯向鹏 |
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| 作者单位： | 孙文标(河南工程学院安全工程系,河南郑州,451191);冯向鹏(首钢总公司环保产业部,北京,100041)
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 运用核磁共振分析手段(NMR),采用结构分析的方法研究了赤泥基胶凝材料的水化过程,探讨了Si(Al)O4]四面体聚合度对Na+固化性能的影响.结果表明:当原料中硅以SiQ0、SiQ1等低聚合度形式存在时,由于低聚合度的Si(Al)O4]四面体易在早期发生解聚,并在富含Ca2+的溶液中发生反应生成钙硅比较高的C-S-H凝胶,这不利于Na+的固化;当硅主要以SiQ2、SiQ3等中聚合度形式存在时,由于水化后期Si(Al)O4]四面体的逐渐解聚和铝对硅的取代作用,促进了低钙硅比的(Na,Al)-C-S-H凝胶的生成,改善了Na+的固化性能;而在硅主要以SiQ4高聚合度形式存在时,又不利于Na+固化.
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| 关 键 词： | 赤泥 固化 取代 煤矸石 |
Influence of [Si(Al)O_4] Polymerization Degree on Solidification of Na~+ |
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| SUN Wen-biao,FENG Xiang-peng.Influence of [Si(Al)O_4] Polymerization Degree on Solidification of Na~+[J].Materials For Mechanical Engineering,2009,33(6). |
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| Authors: | SUN Wen-biao FENG Xiang-peng |
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| Affiliation: | 1.Henan Institute of Engineering;Zhengzhou 451191;China;2.Shougang Environmental Protection Industry Department;Beijing 100041;China |
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| Abstract: | Using structural analysis methods,the hydration process of cementitious materials and the effect mechanism of the polymerization degree of Si(Al)O4] on the solidification of Na+ during hydration process were studied.The results indicate that the Si(Al)O4] polymerization degree in raw materials had a remarkable influence on the solidification of Na+.When Si existed in the form of SiQ0 and SiQ1,it depolymerized in the early stage of hydration process,and then reacted with Ca2+ in the solution to form high C... |
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| Keywords: | red mud solidification substitution gangue |
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