STUDY ON CFRP-CONCRETE BOND BEHAVIOR SUBJECTED TO FREEZE-THAW CYCLES
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摘要: 采用面内剪切试验方法,研究冻融循环作用后的CFRP与混凝土的粘结性能。通过试验旨在了解冻融循环作用对界面耐久性能的影响,为寒冷地区结构加固提供理论依据。试验结果表明:冻融循环作用显著影响界面的破坏形态,并且随着冻融次数的增加,界面粘结强度和初始开裂荷载呈降低的趋势。
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关键词:
- 碳纤维增强聚合物(CFRP) /
- 混凝土 /
- 冻融 /
- 粘结
Abstract: Inner shear test method was used to study CFRP-concrete bond behavior under freeze-thaw cycles.Through this test,the influence of freeze thaw cycle to interface durabilities was revealed,and scientific basis for structural reinforcement of cold regions was provided. The tests results indicate that freeze-thaw cycles has significant effects on the failure modes of interface between CFRP and concrete. The bond strength and crack initial load of CFRP-concrete exhibit decreasing trends with an increase in number of freeze-thaw cycles.-
Key words:
- carbon fiber-reinforced polymer (CFRP) /
- concrete /
- freeze-thaw cycles /
- bond
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