SPLITTING TENSILE STRENGTH OF NEW-OLD CONCRETE BOND SUBJECTED TO ELEVATED TEMPERATURE

摘要：

The splitting tensile test of 90 new-old concrete bond cube specimens werepresented to investigate the effects of elevated temperatures on the tensile behavior of new-old concrete bonding interface. The new-old concrete cube was formed by bonding first andthen heated second,which the temperature range was from ambient temperature to 900℃with an increment of 100℃. Based on the test results,the temperature-damaged mechanismsof new-old concrete bond interface are analyzed and the influences of some main factors suchas temperature,cooling ways,interfacial roughness and interracial adhesives on bond splittingtensile strength are investigated. The multi-factor unified formula of bond splitting tensilestrength is deduced. The results indicate that bond splitting tensile strength decreases sharplyat elevated temperatures.

关键词： new-old concrete bonding elevated temperature splitting tensile strength cooling way roughness

作者: Jinjun Guo Pingxian Li Yan Lu

作者单位: Water Conservancy & Environment College,Zhengzhou University,Zhengzhou,PR China

会议类型: 国际会议

会议名称: The International Conference on Durability of Concrete Structures(2008年混凝土结构耐久性国际学术会议)

会议地点: 杭州

会议语种:英文

页码: 771-778

在线出版日期: 2008-11-01（万方平台首次上网日期，不代表论文的发表时间）