以9根方钢管微膨胀再生混凝土构件为研究对象，进行推出滑移试验，主要研究再生混凝土强度、再生骨料替代率和膨胀剂掺量等因素对微膨胀再生混凝土钢管柱粘结滑移性能的影响。研究结果表明，再生混凝土强度对粘结滑移性能的影响较大，再生骨料替代率对其影响不明显，掺入合理比例的膨胀剂可以有效提高混凝土与钢管之间的粘结力。利用试验研究数据拟合得到钢管与微膨胀再生混凝土界面粘结强度计算公式，为微膨胀再生混凝土工程应用提供一定的理论基础。%Based on the root of 9 square micro expansion recycled concrete filled steel tubular short column as the research object, to launch slip test, the effects of the main research strength of recycled concrete, recycled aggregate re-placement rate and dosage of expansion agent on micro expansion of recycled concrete steel tube column bond-slip per-formance are researched. The results show that the effect of recycled concrete strength on the bond-slip performance is larger, the influence of recycled aggregate replacement rate on the bond-slip performance is not obvious, reasonable pro-portion of expansion agent can effectively improve the cohesive force between concrete and steel tube. Using experimental study data fitting, the steel tube and micro expansion recycled concrete interface bond strength calculation formula is car-ried out, which can provide certain theoretical basis for engineering application.
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