【摘要】 通过协同打印的方法制备了打印层层间增强的3D打印砂浆（3DPM）试件，采用X射线计算机断层扫描（X-CT）技术，研究了增强材料、界面类型（普通界面、增强界面、锯齿界面、增强-锯齿界面）和打印时间间隔对3DPM层间结构及其孔隙分布的影响。结果表明，同时引入自密实增强材料和增加锯齿界面的复合增强效果最显著，能够有效减少3DPM层间孔隙和打印冷缝，提高3DPM试件的均一性。更多还原

【Abstract】 Through a synchronized printing method, 3D printing mortar(3DPM) specimens with interlayer reinforcement were prepared. X-ray computed tomography(X-CT) technology was used to analyze the impact of reinforcement materials, interface types(ordinary interface, reinforced interface, serrated interface, and reinforced-serrated interface), and printing time intervals on interlayer structure and pore distribution. The results demonstrate that the composite reinforcement effect of introducing self-compacting grouting material and increasing serrated interfaces is the most significant, which can effectively reduce interlayer porosity and printing cold joints of 3DPM, enhancing the uniformity of 3DPM.更多还原