湿热环境对FRP加固混凝土结构耐久性能的影响  

The influence of wet-thermal condition on durability behavior of concrete structures strengthened by FRP

作　　者：任慧韬[1] 胡安妮[1] 姚谦峰[2] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116024 [2]西安建筑科技大学土木建筑学院,陕西西安710055

出　　处：《哈尔滨工业大学学报》2006年第11期1996-1999,共4页Journal of Harbin Institute of Technology

基　　金：国家重大基础研究前期研究专项资助项目(2004CCAO4100)

摘　　要：对湿热环境下纤维增强塑料(FRP)力学性能以及FRP与混凝土粘结性能进行了试验分析,探讨了湿热环境对FRP加固混凝土结构耐久性能的影响.试验结果表明,湿热环境对GFRP力学性能有较大影响,对CFRP力学性能基本没有影响;湿热环境对FRP与混凝土的粘结性能有较大不利影响,对FRP加固混凝土结构耐久性能有不利影响.The material properties of FRP and bond behavior of FRP and concrete after the wet-thermal aging are experimentally analyzed. In addition, the influence of the wet-thermal aging on the concrete structures strengthened by FRP is studied. The test results for GFRP specimens subjected to wet-thermal action showed a decreasing trend, whereas for CFRP specimens showed no obvious change. Under wet-thermal condition, there is an obvious decrease for the bond strength between FRP and concrete, and the durability for FRP strengthening concrete structures also declines.

关 键 词：FRP 湿热环境 混凝土结构 耐久性能 

分 类 号：TU528.572[建筑科学—建筑技术科学]