2025 Volume 36 Pages 71-81
In extrusion-based 3D concrete printing technology, a reinforcement method for 3D printed mortar is required because mortar generally has low tensile strength and cannot be used on its own for members subjected to tensile stress. In this study, continuous fiber reinforced mortar was printed by extruding continuous reinforcing steel fiber simultaneously with the mortar, and beam specimens with continuous fibers oriented in the axial direction were fabricated. The structural performance of the specimens was investigated by conducting bending tests, and the experimental results were compared with numerical calculations to evaluate the effect of reinforcement with continuous fibers. The results showed that the mortar beams reinforced with continuous fibers exhibited increased flexural capacity equivalent to the calculated values.
