【摘要】 以再生细骨料混凝土为打印材料，以打印路径为单一变量，共设置了X、Y、XY 3种打印路径，每种路径的抗压试件在x、y、z 3个方向分别加载，探究在每个加载方向下，不同路径之间，打印混凝土力学性能的变化规律，试验结果表明：3D打印试件的抗压强度显著低于浇筑组的，在3个加载方向下，XY路径打印试件的抗压强度均为最高；在不同打印路径下，z方向加载的抗压强度均为最高；此外，研究每种路径的各项异性规律时，得出抗压强度各向异性系数最大的为Y路径试件，最小的为X路径试件。更多还原

【Abstract】 Using recycled fine aggregate concrete as the printing material and printing path as a single variable, three printing paths X,Y and XY were set up.The compressive specimens of each path were loaded in the x,y and z directions respectively to explore the changes in mechanical properties of printed concrete between different paths in each loading direction.The experimental results show that the compressive strength of 3D printed specimens is significantly lower than that of the pouring group, and the compressive strength of the XY path printed specimens is the highest in all three loading directions.Under different printing paths, the compressive strength loaded in the z-direction is the highest.In addition, when studying the anisotropy laws of each path, it is found that the Y-path specimen has the highest anisotropy coefficient for compressive strength, while the X-path specimen has the lowest.更多还原