| 硅灰对水泥基材料热膨胀性能影响的研究 |
| |
| 引用本文： | 李清海,姚燕,孙蓓. 硅灰对水泥基材料热膨胀性能影响的研究[J]. 武汉理工大学学报, 2011, 0(2): 46-49 |
| |
| 作者姓名： | 李清海 姚燕 孙蓓 |
| |
| 作者单位： | 中国建筑材料科学研究总院绿色建筑材料国家重点实验室; |
| |
| 基金项目： | 国家自然科学基金重点项目(50438010) |
| |
| 摘 要： | 通过在水泥基材料中加入矿物掺合料硅灰,利用差示热膨胀测试方法对其热膨胀率进行了研究,结果表明:掺入硅灰的水泥石热膨胀率变化趋势与纯水泥石相似,均表现为随着温度的升高先增加后显著降低的规律,而硅灰的加入使水泥石在高温时产生比纯水泥石更大的收缩。借助于TG-DTA和XRD测试手段,对掺加硅灰后水泥石的热膨胀性能变化规律进行了机理分析,得出硅灰的掺入形成了大量C-S-H凝胶,高温作用下凝胶脱水使其体积明显收缩的结论。
|
| 关 键 词： | 水泥基材料 硅灰 热膨胀率 |
Investigation on Behavior of Silica Fume to Thermal Expansion of Cement |
| |
| LI Qing-hai,YAO yan,SUN Bei. Investigation on Behavior of Silica Fume to Thermal Expansion of Cement[J]. Journal of Wuhan University of Technology, 2011, 0(2): 46-49 |
| |
| Authors: | LI Qing-hai YAO yan SUN Bei |
| |
| Affiliation: | LI Qing-hai,YAO yan,SUN Bei(China Building Materials Academy,State Key Laboratory of Green Building Materials,Beijing 100024,China) |
| |
| Abstract: | The influence of silica fume on the thermal expansions of the cement-based materials was studied through equipments NETZSCH D/L 402EP.The result shows the curve of thermal expansion rate for hardened cement paste that had been amended with silica fume was similar to that for the reference cement,that is thermal expansion curves both increases at first,then both decreases evidently as temperature continues to rise,and at high temperature range the shrinkage rate of cement-based material amended by silica fum... |
| |
| Keywords: | cement-based materials silica fume thermal expansion |
| 本文献已被 CNKI 等数据库收录！ |
|
