<p>In 3D concrete printing (3DCP), achieving rapid development of high static yield stress after extrusion is critical to ensure buildability for preventing collapse of freshly printed concrete. Commonly, this is achieved by incorporating buildability enhancing additives during the initial mixing stage. However, high dosage of such additives often increases flow resistance within the pipeline, which leads to pumping challenges (i.e., blockage and high energy consumption). To address this limitation, this study explores the feasibility of applying active rheology control approach using mechanical vibration to improve the pumpability of 3D printable concrete. A laboratory scale pumping setup was developed to monitor pumping pressure, and rheological properties of both concrete and lubrication layer were examined under applied vibration and different resting times. The results reveal that vibration could reduce the pumping pressure up to 22% at prolonged resting time, by promoting the formation of lubrication materials inside the pipe. Furthermore, vibration suppressed the time-dependent development of plastic viscosity and dynamic yield stress by up to 56% and 27%, respectively. Buildability assessments indicate that vibration does not exert a considerable influence on strength development at rest. These findings highlight the potential of vibration-assisted pumping as a promising approach to overcome the trade-off between pumpability and buildability in 3D concrete printing applications.</p>