| 刘义祥,胡建国,侯爽.不同温度下混凝土受热痕迹的扫描电子显微分析[J].火灾科学,2005,14(2):80-83. |
| 不同温度下混凝土受热痕迹的扫描电子显微分析 |
| SEM Analysis of Concrete Heated on Varied Temperature |
| 投稿时间：2005-01-23 修订日期：2005-03-22 |
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| DOI：10.3969/j.issn.1004-5309.年.期.顺序 |
| 基金项目: |
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| 中文关键词: 混凝土 受热 扫描电镜 显微结构 |
| 英文关键词:concrete heat treatment scanning electric microscope, microscope structure |
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| 中文摘要: |
| 本文利用扫描电子显微镜对经历不同温度的混凝土试块的显微结构进行观察,发现混凝土的显微结构在受热后会产生一些变化,在不同温度下C-S-H凝胶结构、Ca(OH)2晶体以及骨料与胶体之间的界面等显微结构各有不同的特征,这些特征可以用来鉴定混凝土的受热温度。 |
| 英文摘要: |
| The microstructure of concrete heated at different temperatures was observed and analyzed by means of SEM. It was found that the microstructure of C-S-H gel, Ca(OH) 2 crystal changed after heat treatment, and some microcracks appeared on the interface between gel and aggregate. The change showed some apparent characteristics. The relevance between the microstructure of concrete and its heat treatment temperature can be used to check the temperature of concrete suffered in fire. |
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