The global construction industry faces a critical resource shortage and rising demand, necessitating a paradigm shift towards preserving and reusing existing load‐bearing structures. This project presents a novel hybrid modular construction system based on the recovery and direct reuse of precast structural concrete components from obsolete buildings. Utilizing an innovative real‐digital process chain—comprising 3D scanning, selective deconstruction, and CNC‐assisted machining—harvested concrete elements are transformed into standardized “Reconditioned Elements” (REs). A key innovation of this system is the development of reversible steel joints: the ends of the salvaged concrete bodies are cast into standard steel hollow sections (HSS) using swelling mortar, enabling them to be flexibly and reversibly bolted together to form new structural frames. The practical and structural viability of this approach is proven through a 1:1 scale demonstrator, which successfully repurposed elements from a dismantled pedestrian bridge into entirely new static roles, such as columns and foundations.
Lukas Ledderose (Fri,) studied this question.