黏结层数对芳纶纤维-混凝土界面性能的影响  

Influence of the number of bonding layers on the interface performance of aramid fiber concrete

作　　者：许兰兰[1] 林军 XU Lanlan;LIN Jun(Jiangsu Open University,Nanjing 210036,China)

机构地区：[1]江苏开放大学,江苏南京210036

出　　处：《混凝土》2023年第2期53-56,共4页Concrete

基　　金：国家自然科学基金(51908250);江苏省建设系统科技项目(2020ZD20)。

摘　　要：采用试验研究芳纶纤维布(AFRP)黏结层数对AFRP-混凝土界面性能的影响。研究了纤维布黏结层数分别为1层、2层和3层时,界面剥离承载力,纤维片材表面应变以及界面黏结剪应力情况。试验结果表明:随着AFRP黏结层数的增加,AFRP-混凝土界面剥离承载力增大,AFRP-混凝土界面有效黏结长度提高,AFRP-混凝土界面黏结剪应力提高。可见增加芳纶纤维布黏结层数,对AFRP-混凝土界面剥离承载力以及界面剥离延性破坏有利。The influence of the number of bond layers of AFRP on the interface performance of AFRP-concrete is studied by double shear test.The interfacial debonding capacity,the surface strain of the fiber sheet and the interfacial shear stress are studied when the number of bonding layers of the fiber cloth is one,two and three,respectively.The results show that with the increase of AFRP bonding layer,the AFRP-concrete interface peeling capacity increases,the maximum force transmission length of AFRP-concrete interface increases,and the AFRP-concrete interface bond shear stress increases.It is concluded that when the number of bonding layers of the AFRP-concrete interface increases,it is advantageous for the interface peeling bearing capacity and the interface peeling ductile damage.

关 键 词：双剪试验 剥离承载力 界面性能 

分 类 号：TU528.572[建筑科学—建筑技术科学]