【摘要】 为探究硅灰(SF)、粉煤灰(FA)、矿粉(SP)对氯氧镁水泥砂浆(MOCM)与普通硅酸盐混凝土(OPCC)粘结性能的影响，对改性MOCM与OPCC在浸水与盐冻耦合侵蚀后的界面粘结性能进行测试。通过不同侵蚀环境下的界面粘结强度试验结合XRD物相分析，分析了不同掺合料改性MOCM与OPCC在不同侵蚀环境下粘结强度的退化规律、确定最优粘结参数以及MOCM中物象组成。试验表明，在任意侵蚀周期内，改性MOCM与OPCC的界面粘结强度均大于普通MOCM,XRD显示改性MOCM内部会生成M-S-H凝胶与5相晶体生成的致密网络结构，界面粘结性能得到提升。在不同侵蚀环境下18 mm厚度的10%FA改性MOCM界面粘结强度最大，MOCM与OPCC协同工作能力最强。更多还原

【Abstract】 In order to explore the influence of silica fume(SF), fly ash(FA) and mineral powder(SP) on the bonding performance of magnesium oxychloride cement mortar(mocm) and ordinary portland concrete(OPCC), the interface bonding performance of modified mocm and OPCC after immersion and salt freezing coupling erosion was tested. Through the interface bonding strength test under different erosion environments and XRD phase analysis, the degradation law of bonding strength between mocm and OPCC modified by different admixtures under different erosion environments was analyzed, and the optimal bonding parameters and the image composition in mocm were determined. The experimental results show that the interfacial bonding strength of modified mocm and OPCC is higher than that of ordinary mocm in any erosion cycle, because XRD shows that the dense network structure of m-s-h gel and 5-phase crystal will be generated in the modified mocm, so the interfacial bonding performance is improved. In different erosion environments, the interface bonding strength of 18 mm thick 10% FA modified mocm was the highest, and the cooperative work ability of mocm and OPCC was the strongest.更多还原