摘要
采用7种不同的粘结树脂,通过2批双剪试件的拉伸剪切试验研究了拉挤成型玄武岩纤维复合板与后浇混凝土湿粘结界面的力学性能,并将其与在既有混凝土表面外贴FRP形成的干粘结界面进行了比较,通过对比两者的破坏特征、荷载位移曲线、有效粘结长度、粘结滑移关系、界面断裂能以及粘结破坏机理,深入地研究了湿粘结界面的性能。结果表明：湿粘结的粘结强度仅为干粘结的1/2~2/3,但2种界面的有效粘结长度相差不大。最后,基于试验数据提出了适用于湿粘结界面的剪切滑移本构模型。
By adopting seven kinds of adhesive resins,the mechanical properties of the interface between pultruded Basalt fiber reinforced polymer plates and cast-in-place concrete is studied according to two groups of stretching double-shear test.And it is compared with the dry-bonding interface between BFRP plates and the precast concrete.Further study is conducted by comparing the damage features,load-displacement curves,effective bond length,bond slip relationship and interface fracture energy between the two interfaces.It is found that the effective bond length of the two interfaces are similar,but the bond strength of the wet-bonding is about half of the dry-bonding.Finally,the shear stress-slip model is proposed for the wet-bonding interface based on the experimental data.
出处
《土木建筑与环境工程》
CSCD
北大核心
2011年第3期74-79,共6页
Journal of Civil,Architectural & Environment Engineering
基金
国家十一五支撑计划项目(2006BAJ03B07)
国家自然科学基金资助项目(50908045)
关键词
湿粘结
界面
粘结
有效粘结长度
断裂能
wet-bonding
interfaces
bond
effective bond length
fracture energy
