Waste glass granules are considered a cost-effective alternative material to replace aggregates in concrete. However, the bond degradation of corroded concrete containing recycled glass granules has not been explored. This study investigated the effect of glass granules on rebar corrosion and the bond loss between rebars and concrete subjected to accelerating corrosion. The compressive strength and pore structure of the concrete were first evaluated, and the corrosion rate and pull-out testing of rebar in concrete were conducted after corrosion. The results show that, despite reducing the initial bond strength before corrosion, a high replacement of recycled glass granules improved the concrete's resistance to corrosion due to the optimized microstructure of concrete. In addition, the compressive strength of the concrete dominated the initial bond strength, which reduced with increasing the corrosion period. However, this negative effect of corrosion was mitigated by increasing the recycled glass granules, followed by reduced bond strength loss and a lower rebar corrosion rate.

中文翻译：

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使用回收玻璃颗粒在混凝土中腐蚀和粘结


废玻璃颗粒被认为是替代混凝土中骨料的一种具有成本效益的替代材料。然而，含有回收玻璃颗粒的腐蚀混凝土的粘结降解尚未得到探索。本研究调查了玻璃颗粒对钢筋腐蚀的影响以及钢筋与受到加速腐蚀的混凝土之间的粘合损失。首先评价了混凝土的抗压强度和孔隙结构，并在腐蚀后进行了混凝土中钢筋的腐蚀速率和拉拔试验。结果表明，尽管降低了腐蚀前的初始粘结强度，但由于混凝土的微观结构优化，再生玻璃颗粒的高替代率提高了混凝土的耐腐蚀性。此外，混凝土的抗压强度在初始粘结强度中占主导地位，随着腐蚀期的增加而降低。然而，通过增加回收玻璃颗粒，从而减少粘合强度损失和降低钢筋腐蚀速率，减轻了腐蚀的这种负面影响。