RESEARCH ON FREEZE-THAW RESISTANCE BEHAVIOR OF BONDED JOINTS BETWEEN CFRP AND HIGH STRENGTH CONCRETE UNDER SUSTAINED LOAD

摘要：

In recent years,increasing attention is focused on the bond degradation for strengthened normal concrete specimens that are aged in varied environments,but less attention to the durability of high strength concrete strengthened with CFRP sheets. In cold regions,the main factor limiting the application of FRP strengthening concrete structures is frost environment. The freeze-thaw resistance behavior of bonded joints between CFRP and high strength concrete under sustained load are studied according to double shear test. The results show that the failure load,debonded load,the maximum of strain and peak value of shear stress decreased in different degrees under the freeze-thaw conditions,extra damage to bonded interface is caused by sustained load. In addition,the mechanism on behavior of bonded joints under sustained load is analyzed after freeze-thaw cycles.

关键词： CFRP High strength concrete Freezing and thawing cycle Sustained load

作者: Su-Yan Wang Xiao-Ming Yin Hua-Nan He Wen-Hua Yu

作者单位: School of Civil and Hydraulic Engineering,Dalian university of technology .Dalian 116024,P.R.China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 1289-1297

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）