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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

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【Author】 REN Hui-tao~(1,2),HU An-ni~1,YAO Qian-feng~2(1.School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China,;2.School of Civil and Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China)

【机构】大连理工大学土木水利学院；西安建筑科技大学土木建筑学院辽宁大连116024；西安建筑科技大学土木建筑学院；陕西西安710055；辽宁大连116024；

【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.更多还原

【Abstract】 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.更多还原

【关键词】 FRP；湿热环境；混凝土结构；耐久性能；
【Key words】 FRP； wet-thermal condition； concrete structures； durability；

【基金】国家重大基础研究前期研究专项资助项目(2004CCAO4100)

【文献出处】哈尔滨工业大学学报 ,Journal of Harbin Institute of Technology , 编辑部邮箱 ,2006年11期

【分类号】TU375
【被引频次】72
【下载频次】777

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