Connections in Additively Manufactured Concrete Elements and their Impact on the Construction System

Additive manufacturing in concrete construction enables modular elements with high geometric freedom and customization. In such systems, structural connections are critical, as they govern not only local load transfer and assembly but also broader system‐level aspects such as segmentation, robustness, logistics, and construction efficiency. This paper examines manufacturing techniques for connections in additively manufactured concrete and their influence on the construction system. Relevant fabrication approaches, including stamping of fresh concrete and subtractive processing of early‐age and hardened concrete, are reviewed with regard to geometric accuracy, surface quality, manufacturing effort, and suitability for dry joints. The paper further highlights how connection design affects joint placement, stiffness distribution, transport and storage constraints, assembly processes, and structural system performance. It is argued that connections should be understood not merely as local details, but as key design variables linking fabrication, structural behaviour, and system integration.