Effect of superabsorbent polymers on the interlayer bonding properties of 3D printing mortar

To investigate the impact of internal curing using superabsorbent polymers (SAPs) on the interlayer bonding properties of 3D printed mortar, this study examined the interlayer bonding properties of 3D printed mortar with different types of SAPs incorporated. The experimental results demonstrated that the addition of SAPs could enhance the interlayer bond strength of 3D printed mortar to a certain extent, with the maximum split tensile strength increased by 48.78%. The study employed the layered casting tensile method, which is simple and efficient, to assess the interlayer bond strength of the printed mortar. To investigate the influence of internal curing using superabsorbent polymers (SAPs) on the interlayer bond strength of 3D printed mortar, this study examined the interlayer bond strength of 3D printed mortars with different types of SAP added. The experimental results show that the addition of SAP can enhance the interlayer bond strength of 3D printed mortar to a certain extent, with a maximum splitting tensile strength increase of 48.78%. In order to evaluate the interlayer bond strength of printed mortar, this study used the layer casting tensile method, which is simple and efficient.