Interlocking 3D printed concrete printed by tooth-like nozzles exhibits superior interfacial tensile performance. However, the influences of geometric parameters on the interlayer tensile strength of interlocking specimens remains unclear, and there is an urgent need to establish formulas to quantify the influences. To address these issues, this study, based on a novel single-tooth nozzle designed to enhance interlayer performance, comprehensively considers macro-mechanical performance testing and micro-porosity analysis. It reveals the failure modes of interlayer interfacial tension in single...
