C 05

Jointing Principles for Combination of Concrete Elements Produced by Different Additive Manufacturing Processes

Prof. Dr.-Ing. Martin Empelmann, Project Leader
Prof. Dr.-Ing. Harald Kloft, Project Leader

Dr.-Ing. Abtin Baghdadi
M. Sc. Jan-Paul Lanwer
M. Sc. Lukas Ledderose
M. Sc. Hendrik Weigel

Summary of C 05

In this project, principal questions on the jointing of additively manufactured (AM) structural components using dry joints will be investigated. Based on the features of three AM processes (particle-bed, extrusion, shotcrete), various joint types (smooth, profiled) and production methods (directly printed, cut, grinded) are considered with regard to joint topology, dimensional accuracy and load-bearing behaviour. The investigation strategy comprises experimental, numerical and the- oretical methods and is consecutive in scale (micro, meso) as well as loading type (compression, shear). The results will provide fundamental insight into the load- bearing behaviour of AM dry joints.

Prof. Dr.-Ing. Martin Empelmann

instructs the research engineer at iBMB in the conceptual structure, execution and evaluation of the theoretical, experimental and numerical research work.

massivbau(at)ibmb.tu-bs.de

Prof. Dr.-Ing. Harald Kloft

instructs the research engineer at ITE in the conceptual structure, execution and evaluation of the theoretical and experimental research work.

ite(at)tu-bs.de

Dr.-Ing. Abtin Baghdadi

is a research associate at Institute of Structural Design (ITE) of TU Braunschweig. He is responsible for experimental, theoretical and numerical research work as well as for the coordination of the cooperations within the SFB.

a.baghdadi(at)tu-braunschweig.de

M. Sc. Jan-Paul Lanwer

j.lanwer(at)ibmb.tu-bs.de

is a research associate at iBMB, Division of Concrete Construction of TU Braunschweig. He is responsible for experimental, theoretical and numerical research work.

M. Sc. Lukas Ledderose

l.ledderose(at)tu-braunschweig.de

2021 | Empelmann, M.; Kloft, H.: Practical solutions in additive manufacturing – Innovative jointing principles. In: BFT International 87, Issue 2, p. 93.

2020 | Empelmann, M.; Oettel, V.: 3D-printed reinforced-concrete elements - Testing and analysis of the structural behaviour. In: BFT International, no. 2, pp. 77.

2020 | Baghdadi, A.; Heristchian, M.; Ledderose, L.; Kloft, H.: Experimental and numerical assessment of new precast concrete connections under bending loads. In: Engineering Structures 212, ELSEVIER.

2020 | Kloft, H.; Empelmann, M.; Oettel, V.; Ledderose, L.: 3D Concrete Printing – Production of first 3D Printed Concrete Columns and Reinforced Concrete Columns. In: BFT International, no. 6, pp. 28–37.

2019 | Wichert, M.; Matz, H.; Empelmann, M.: Grouted Segment Joints for Structures Made of Ultra-High Performance Concrete. fib, Krakow.

2019 | Ledderose, L.; Lehmberg, S.; Budelmann, H.; Kloft, H.: Robot-assisted, magnetic alignment of microsteel fibers in thin-walled UHPFRC components. In: Beton- und Stahlbetonbau 114, no. 11, pp.33–42.

2018 | Oettel, V.; Empelmann, M.: Structural Behavior of Profiled Dry Joints Between Precast Ultra-High Performance Fiber Reinforced Concrete Elements. In: Structural Concrete.

2017 | Wichert, M.; Remitz, J.; Empelmann, M.: Ultra-High Performance Spun Concrete Poles - Part II: Tests on Grouted Pole Joints. HPC/CIC, Tromsø.

2017 | Lindemann, H.; Fromm, A.; Ott, J.; Kloft, H.: Digital Prefabrication of Freeform Concrete Elements Using Shotcrete Technology. In: IASS Annual Symposium, Hamburg.

2016 | Lehmberg, S.; Ledderose, L.; Wirth, F.; Budelmann, H.; Kloft, H.: Light-Weight Structures Made of Thin Walled, Dry Jointed Surface Elements Made of UHPFRC. In: Beton- und Stahlbetonbau 111, no. 12, pp. 806–815.

2016 | Busse, D.; Empelmann, M.: Shear strength of thin- walled, micro-reinforced concrete members. In: Beton- und Stahlbetonbau 111, no. 12, pp. 840–850.

2016 | Neudecker, S.; et al.: A New Robotic Spray Technology for Generative Manufacturing of Complex Concrete Structures without Formwork. In: 14th CIRP, Gothenburg.

2014 | Oettel, V.; Empelmann, M.: Bearing Capacity of the Compression Strut of Prestressed UHPFRC Box Girders Under Torsion and Combined Loading. In: Beton- und Stahlbetonbau 109, no. 3, pp. 182–192.