| 摘要: |
| 采用热释光、微量热分析和红外光谱，研究了熟料中常见的7种典型离子复合掺杂对阿利特水化活性的影响.结果表明：不同离子固溶所致缺陷显著提高了阿利特早期水化活性，其中浅能级缺陷较深能级缺陷对阿利特早期水化活性的影响更大.异价置换离子在阿利特中固溶形成的缺陷较为复杂，改变了阿利特的缺陷能级分布，对阿利特热释光性有显著影响.阿利特原始热释光性(储藏的亚稳能量)首先取决于阿利特晶型，其次受掺杂离子尤其是异价置换离子的影响显著.阿利特水化活性与原始热释光峰强度的正相关性仅适用于同晶型阿利特. |
| 关键词: 掺杂 阿利特 多晶态 热释光 缺陷 水化 |
| DOI：103969/j.issn1007 9629201605002 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(51302256，51172222) |
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| Effect of Multiple Foreign Ions Doping on Hydration Reactivity of Alite |
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REN Xuehong, ZHANG Wensheng, YE Jiayuan
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State Key Laboratory of Green Building Materials, China Building Materials Academy, Beijing 100024, China
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| Abstract: |
| Effect of seven typical foreign ions in different combinations on hydration reactivity of alite was studied by thermoluminescence(TL), isothermal calorimetry and Fourier transform infrared spectroscopy(FTIR). Results show that the initial hydration reactivity of alite is markedly improved due to the presence of various defects, among which shallow level defects play a more important role than deep level defects. Heterovalent ion replacement has obvious influence on thermoluminescene due to the formation of complex extrinsic defects which result in great changes in the defect energy level distribution of alite. It is demonstrated that the intensity of the original thermoluminescene(metastable energy stored in alite) is affected primarily by the polymorphic form of alite, and then affected by foreign ions, especially heterovalent ions. The positive correlation between the hydration reactivity and the original thermoluminescene only applies to alite with the same polymorphic form. |
| Key words: doping alite polymorph thermoluminescence defect hydration |
