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采用拉拔试验研究相同直径GFRP筋和钢筋与混凝土的粘结性能,比较冻融循环前后的粘结性能,并分析冻融循环条件、筋材种类等因素对粘结性能的影响,试验结果表明冻融循环作用后的GFRP筋混凝土粘结强度高于钢筋混凝土粘结强度。
The pullout test was used to study the bonding properties of the same diameter GFRP bars and steel bars to concrete. The bonding performance before and after the freeze-thaw cycle was compared. The influence of the freeze-thaw cycle conditions and the types of bars on the bonding properties was also analyzed. The bonding strength of GFRP tendons after freeze-thaw cycle is higher than that of reinforced concrete.