Experimental study on bond behavior of CFRP plate-steel interface in freeze-thaw environment

被引：0
|
作者：
Wei F. [1 ]
Zhu D. [1 ]
Wang H. [1 ]
Bian Z. [1 ]
机构：
[1] College of Civil and Transportation Engineering, Hohai University, Nanjing
来源：
| 1600年 / Southeast University卷 / 50期
关键词：
Bond behavior; Carbon fiber reinforced polymer (CFRP); Double-shear joint; Freeze-thaw environment; Steel;
D O I：
10.3969/j.issn.1001-0505.2020.05.002
中图分类号：
学科分类号：
摘要：
To investigate the effect of the freeze-thaw environment on the bond behavior between the carbon fiber reinforced polymer (CFRP) plate and steel, 12 CFRP plate-steel double-shear joints were tested. The failure mode, the ultimate load, the CFRP plate strain, the interfacial shear stress and the bond-slip relationship were analyzed. The experimental results show that the number of the freeze-thaw cycles has no effect on the failure mode and all specimens exhibit cohesive failure. However, with the increase in the number of freeze-thaw cycles, the mechanical properties of the adhesive and the ultimate load of the interface decrease. After 300 freeze-thaw cycles, the elastic modulus and the tension strength of the adhesive decrease by 9.3% and 10.3% while the ultimate load decreases by 14.5%. The freeze-thaw environment has no effect on the curve shapes of the CFRP strain distribution, the interfacial shear stress distribution and the bond-slip relationship. The bond-slip relationship curve is approximately bilinear. The freeze-thaw environment can reduce the maximum strain on CFRP plate, the maximum interfacial shear stress and the corresponding slip, and the maximum slip. © 2020, Editorial Department of Journal of Southeast University. All right reserved.
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页码：803 / 807
页数：4
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