BOND MECHANISM AND DEGRADATION MODEL BETWEEN REINFORCEMENT AND CONCRETE SUBJECTED TO DEICER-FROSTING CYCLES
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摘要: 通过对盐冻循环后钢筋与混凝土梁式试件的粘结试验,研究了盐冻循环对钢筋与混凝土粘结性能的影响。在试验研究的基础上,探讨了混凝土经受盐冻循环后钢筋与混凝土粘结退化机理,给出了盐冻循环后粘结强度的退化规律以及粘结-滑移本构模型。Abstract: The experiment of bond of beam elements subjected to deicer-frosting cycles was carried out and the effect of deicer-frosting cycles on the bond characters between reinforcement and concrete was studied.Based on the experimental results, the bond mechanism of reinforcement and concrete after deicer-frosting cycles was explored, and the degradation rule of bond strength and the model of bond-slip relationship were developed.
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Key words:
- reinforced concrete /
- deicer-frosting cycles /
- bond strength /
- bond mechanism /
- constitutive relation
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