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。
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.
出处
《火灾科学》
CSCD
2005年第2期80-83,共4页
Fire Safety Science
关键词
混凝土
受热
扫描电镜
显微结构
concrete
heat treatment
scanning electric microscope, microscope structure
