摘要
通过X射线衍射分析及扫描电镜观察,研究了经高温、冷却并静置若干时间后混凝土物相及微观形貌随受火温度、静置时间和冷却及养护方式等的变化情况,探讨了火灾高温静置后混凝土抗压强度变化的原因.结果表明:高温静置后,混凝土的力学性能发生了明显变化.
Based on Xray diffraction analysis and stereoscan test, the lithofacies and microstructure of concrete that is placed certain time after exposure to high temperature were experimentally investigated. Influence of the factors, such as temperature, standing time after cooling of concrete, methods of cooling and curing on the compressive strength of concrete were analyzed. The test results show that the variations of mechanical performance of concrete with certain standing time after exposure to high temperature are significant.
出处
《建筑材料学报》
EI
CAS
CSCD
2003年第2期135-141,共7页
Journal of Building Materials
基金
中国工程建设标准化协会<火灾后建筑结构可靠性鉴定标准>编制基金资助((98)建标协字第08号)
冶金部建筑研究总院科研基金资助(99024)
