The test which is about carbon fiber concrete and mixed carbon fiber concrete under high temperature for hours is conducted. We ana-lyze the changes of basical mechanical properties and micro-structure of different mixed fiber concrete which is after different high temperatures. According to set temperature variable,we analyze the changes and damage of mixed fiber concrete which are after different high temperatures. The experimental results show that mixed fiber increase the safety of concrete.%通过高温电阻炉持续加热掺入碳纤维与碳纤维混杂纤维的混凝土，分析了在不同温度加热后，各种纤维混凝土物理力学性能的变化情况，通过设置温度变量，定量分析了不同温度下混杂纤维混凝土的变化与损伤规律，试验结果表明混杂纤维提高了混凝土的安全性。
展开▼
