摘要
对混凝土的高温性能进行了分析和总结,包括高温下不同强度等级混凝土的强度和变形性能恶化的规律;不同降温方式、升温-加载途径对混凝土强度的影响;潮湿环境有利于高温损伤混凝土强度的恢复。此外还阐述了高强混凝土在高温作用下的爆裂现象和爆裂机理,并提出改进高强混凝土抗火性能的建议。
This paper analyzes and summarizes fire-resistance properties of concrete,including the strength and deformation deterioration at the elevated temperature for concrete of different grades. The influence of different cooling conditions and different heating loading paths on the strength of concrete is presented. The humid environment is advantageous to the strength recovery of concrete damaged by high temperature. Based on these analyses, the explosive spalling of HSC at high temperature and its mechanism are also expounded. Some suggestions on the improvement of fire-resistance behaviors of HSC are proposed.
出处
《建筑科学》
北大核心
2005年第3期16-20,共5页
Building Science
基金
云南省教育基金资助项目(59978022)
