【摘要】进行了不同骨料、不同强度混凝土高温下以及不同冷却方式下力学性能的试验研究，并与常温下混凝土的力学性能进行了对比分析。了解高温下和高温冷却后混凝土力学性能的变化，对评估钢筋混凝土结构火灾后的性能有重要作用。
【关键词】混凝土；高温；力学性能；骨料

Abstract:The effect of the aggregate type, strength grade, cooled way and the heating temperature on the mechanics performance of concrete was experimentally investigated. All the test results were compared with the relevant ones in room temperature. The decreasing degree of strength of concrete was got. This may be beneficial to the assessment and appraisal of RC structures after fire.
Key words:concrete; high temperature; mechanics performance; aggregate