Injection 3D Concrete Printing (I3DCP) – Material Efficient Lightweight Reinforced Concrete Structures based on Spatially Complex Strut-and-Tie Models (A09*)

• Subject Area: Architecture, Building and Construction History, Construction Research, Sustainable Building Technology ; Construction Material Sciences, Chemistry, Building Physics
• Term: since 2024
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 414265976

Injection 3D Concrete Printing (I3DCP) is a new additive manufacturing process where a fluid of material A is robotically injected into another fluid of another material B. The role of material B is to support material A such that material A maintains a stable position. In general, I3DCP can be categorized into sub-categories, whereby the following two subcategories are addressed within this project: Concrete in Suspension (CiS) where concrete is injected into a non-hardening carrier liquid and Concrete in Concrete (CiC) where a concrete is injected into another concrete with different properties. The main goals for these technique within this project are: i) establish a method for structural design, ii) integrate reinforcement, iii) predict and model print stability and iv) enable geometrically precise multi-strand printing.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 277: Additive Manufacturing in Construction (AMC) – The Opportunity for Large Impact
• Applicant Institution: Technische Universität Braunschweig
• Project Heads: Professor Dr.-Ing. Norman Peter Hack; Professorin Dr.-Ing. Inka Mai