To investigate the bonding performance of near-surface mounted (NSM) carbon fiber-reinforced polymer (CFRP) technique under different curing temperatures, a total of five test specimens strengthened with NSM CFRP strip were tested by direct pull-out methods. The strain of CFRP strip, interfacial bonding shear stress, ultimate load and failure mode were analyzed through the test. The experiment results showed that the ultimate load and bonding shear stress of the specimens increased gradually when curing temperature was lower than the glass transition temperature (T_g) of the bond material. Afterward, they gradually decreased with the increase in temperature. The bonding shear stress was gradually transmitted from the loading end to the free end. The failure modes were changed from CFRP strip–adhesive interface bonding failure to CFRP strips fracture failure with the temperature rising. In this paper, the bonding performance experiment results of NSM CFRP strip could provide a reference for the rapid strengthening of monorail traffic track beams.

中文翻译：

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不同养护温度下近表面CFRP条与混凝土粘结性能的试验分析。

为了研究近表面贴装（NSM）碳纤维增强聚合物（CFRP）技术在不同固化温度下的粘结性能，通过直接拉出方法测试了总共5个用NSM CFRP条增强的试样。通过测试分析了CFRP板的应变，界面粘结剪切应力，极限载荷和破坏模式。实验结果表明，当固化温度低于玻璃化转变温度（T _g）时，试样的极限载荷和粘结剪应力逐渐增加。）的粘结材料。之后，它们随着温度的升高逐渐降低。粘结剪切应力逐渐从加载端传递到自由端。随着温度的升高，失效模式从CFRP条-胶粘剂界面粘合失效变为CFRP条断裂失效。NSM CFRP胶条的粘结性能试验结果可为单轨交通轨道梁的快速加固提供参考。