People
Frederic Chovghi is a doctoral researcher at the Professorship of Structural Design at the Technical University of Munich (TUM). His primary research focuses on the development of fabrication-aware form-finding methods for extrusion 3D printing.
Project(s)
3D Structural Puzzle – Numerical Multi Scale Shape and Topology Optimisation Methods to Additively Manufacture Optimal Structures from Optimised Pieces
Publications
All publications from M. A. Frederic ChovghiPublications from M. A. Frederic Chovghi
Publications
2025 | F. Chovghi, C. Richter, P. D’Acunto: Fabrication-aware structural form-finding for additive manufacturing: An equilibrium-based approach, Automation in Construction vol. 178, 2025, https://doi.org/10.1016/j.autcon.2025.106386.
Data |Zenodo, 2025, https://doi.org/10.5281/zenodo.17857879
is a research associate at TUM School of Engineering and Design. He works on structural analysis of functional graded concrete produced by near-nozzle mixing system in A03 and is responsible for evaluating the properties of graded concrete by means of experiments and modelling.
Project(s)
Extrusion of Near-Nozzle Mixed Concrete –Individually Graded in Density and in Rate of 3D Fibre Reinforcement
Publications
All publications from M. Sc. Shengbo ChengPublications from M. Sc. Shengbo Cheng
Publications
2026 | S. Cheng, B. Grimm, M. Unterreiner, M. Hechtl, M. Dahlenburg, T. Kränkel, J. Fottner, C. Gehlen, F. Bos: Properties of the transition region in 3D printed functionally graded concrete through Near Nozzle Binder-Aggregate Mixing (NNBAM) Construction and Building Materials, Volume 520. 2026, https://doi.org/10.1016/j.conbuildmat.2026.145990
Data | Zenodo, 2026, https://doi.org/10.5281/zenodo.18899746
is a doctoral researcher at the Chair of Data Science in Civil Engineering at Bauhaus-University Weimar. He conducts research on geometric modelling and simulation of additively manufactured (AM) parts, focusing on developing efficient and effective mechanical simulation workflows for evaluating the performance of as-built AM components. His work aims to advance the field of AM by enhancing the reliability of production processes.
Publications
All publications from M. Sc. Matti ChristmannPublications from M. Sc. Matti Christmann
Publications
2026 | M. Horstjan, M. Müggenburg, M. Christmann, S. Vogts, S. Kollmannsberger, K. Thiele, J. Unglaub: Scan-based Fatigue Prediction of DED-Arc Additively Manufactured Steel Components Additive Manufacturing, 2026, https://doi.org/10.1016/j.addma.2026.105243
Data | Zenodo, 2026, https://doi.org/10.5281/zenodo.17272254
Pierluigi D’Acunto is Assistant Professor of Structural Design and a Fellow at the Institute for Advanced Study at the Technical University of Munich. He holds a combined degree in Building Engineering-Architecture from the University of Pisa, a Master of Architecture from the Architectural Association in London, and a doctorate with distinction from ETH Zurich. His research explores geometry-based methods in structural design, computational approaches using equilibrium modeling, machine learning-driven form-finding, and fabrication-aware structural design strategies supported by advanced digital manufacturing technologies.
Project(s)
3D Structural Puzzle – Numerical Multi Scale Shape and Topology Optimisation Methods to Additively Manufacture Optimal Structures from Optimised Pieces
Publications from Prof. Dr. sc. ETH Zurich Pierluigi D’Acunto
Publications
2025 | S. Dietrich, P. Schneider, C. Richter, Asl R. Najian, K. Dörfler, K-U. Bletzinger, P. D´Acunto: Multi-fidelity structural design for 3D concrete printing with selective paste intrusion Automation in Construction, 179, 2025, DOI: 10.1016/j.autcon.2025.106352
Data |Zenodo, 2025, https://doi.org/10.5281/zenodo.17910971
2026 | N. Hack, Y. Xiao, C. Jantzen, J. Tesche, K. Mawas , M. Gerke, P. D´Acunto: Design and fabrication of structures with graphic statics and augmented reality IASS 2024 Zurich Symposium, 2024, https://mediatum.ub.tum.de/node?id=1760208&change_language=en
Data | LeoPARD, 2026, https://doi.org/10.24355/dbbs.084-202606211131-0
2025 |A. Keune, E. Manz, C.Y.J. Siry, J. Rowsell, K. Dörfler, K. Kumpulainen, K. Peppler, M. Schalk, N. Thompson, P. D´Acunto, S. Wilmes, S. Jurow: Design Future(s) Collective: New Directions for Educational Design Research 19th International Conference of the Learning Sciences—ICLS, 2025, https://doi.org/10.22318/icls2025.253440
2025 | A. Keune, Z. Simsic, P. D´Acunto: Architecture Students Create Balance Structures from Everyday Objects 19th International Conference of the Learning Sciences—ICLS, 2025, https://doi.org/10.22318/icls2025.460425
Data | Zenodo, 2025, https://doi.org/10.5281/zenodo.17914011
2024 |E. Krakovska, D. Briels, A. Straßer, T. Kränkel, T. Auer, C. Gehlen, P. D´Acunto, K. Dörfler: Functionally Hybridised Lightweight Concrete Components: Monolithic Building Construction Using Selective Paste Intrusion Digital Concrete 2024, 2024, https://doi.org/10.1007/978-3-031-70031-6_41
2025 | F. Chovghi, C. Richter, P. D’Acunto: Fabrication-aware structural form-finding for additive manufacturing: An equilibrium-based approach, Automation in Construction vol. 178, 2025, https://doi.org/10.1016/j.autcon.2025.106386.
Data |Zenodo, 2025, https://doi.org/10.5281/zenodo.17857879
2023 | O. Oztoprak, A. Paolini, P. D’Acunto, E. Rank, S. Kollmannsberger: Two-scale analysis of spaceframes with complex additive manufactured nodes. In: Engineering Structures, vol. 289, p. 116283, Aug. 2023,
doi: 10.1016/j.engstruct.2023.116283
is an expert in mechanical engineering, specialized in development, CAD-Design and construction of complex machines at the Chair of Materials Handling, Material Flow, Logistics within TUM. He is responsible for design, construction, automation, simulation and optimization of the near-nozzle continuous mixing system developed in A03. Furthermore he is responsible for the material supply and the material discharge system within this project.
Project(s)
Extrusion of Near-Nozzle Mixed Concrete –Individually Graded in Density and in Rate of 3D Fibre Reinforcement
Publications
All publications from M. Sc. Maximilian DahlenburgPublications from M. Sc. Maximilian Dahlenburg
Publications
2026 | S. Cheng, B. Grimm, M. Unterreiner, M. Hechtl, M. Dahlenburg, T. Kränkel, J. Fottner, C. Gehlen, F. Bos: Properties of the transition region in 3D printed functionally graded concrete through Near Nozzle Binder-Aggregate Mixing (NNBAM) Construction and Building Materials, Volume 520. 2026, https://doi.org/10.1016/j.conbuildmat.2026.145990
Data | Zenodo, 2026, https://doi.org/10.5281/zenodo.18899746
2023 | D. Briels, M. Renz, A. Nouman, A. Straßer, M. Hechtl, M. Dahlenburg, B. Knychalla, P. Sonnleitner, F. Herding, J. Fleckenstein, E. Krakovská, K. Dörfler, T. Auer: Monolithic AM Façade: Multi-Objective Parametric Design Optimization of Additively Manufactured Insulating Wall Elements. In: Frontiers in Built Environment ., vol. 9, 2023 doi: 10.3389/fbuil.2023.1286933
2021 | Tan, Y.; Dahlenburg, M.; Kessler, S.; Fottner, J.: Virtual Prototyping mit DEM zur Entwicklung eines Near-Nozzle-Mixing Verfahrens für den additiven 3D Betondruck für den Roboter Einsatz. In: 25. Fachtagung Schüttgutfördertechnik. OVGU Magdeburg, 2021.
is a doctoral researcher at the Institute for Machine Tools and Production Technology (IWF) at TU Braunschweig. He is working on the development of different end effectors for an automated concrete reinforcement as well as the surface processing of printed SC3DP elements. Additionally he is developing different nozzle geometries for the SC3DP process. Moreover, he will frequently publish the results achieved within the community.
Project(s)
Integrated Additive Manufacturing Processes for Reinforced Shotcrete 3D Printing (SC3DP) Elements with Precise Surface Quality
Publications
All publications from M. Sc. Martin DavidPublications from M. Sc. Martin David
Publications
2025 | R. Dörrie, S. Gantner, F.S. Amiri, L. Lachmayer, M. David, T. Rothe, N. Freund, A. Nouman, K. Mawas, O. Oztoprak, P. Renner: From Digital to Real: Optimised and Functionally Integrated Shotcrete 3D Printing Elements for Multi-Storey Structures, Buildings 2025, Special Issue Robotics, Automation and Digitization in Construction, 2025, https://doi.org/10.3390/buildings15091461
2025 | R. Dörrie, L. Lachmayer, A. Baghdadi, M. David, K. Dröder, A. Raatz, H. Kloft: Investigation on process guidelines and geometric capabilities for robust shotcrete 3D printing, Materials & Design, 2025, https://doi.org/10.1016/j.matdes.2025.115050
Data | LeoPARD, 2025, https://doi.org/10.24355/dbbs.084-202510271126-0
2025 | R. Dörrie, L. Lachmayer, A. Baghdadi, M. David, K. Dröder, A. Raatz, H. Kloft: Investigation on process guidelines and geometric capabilities for robust shotcrete 3D printing Materials & Design, 2025, 115050, https://doi.org/10.1016/j.matdes.2025.115050
Data |LeoPARD, 2025, https://doi.org/10.24355/dbbs.084-202510271126-0
2024 | R. Dörrie, M. David, N. Freund, D. Lowke, K. Dröder, H. Kloft: Surface Processing of Shotcrete 3D Printed Concrete Elements Using a Rotating Trowel Disc–Influence of Timing on Resulting Surface Quality RILEM International Conference on Concrete and Digital Fabrication, pp. 397-404, Cham: Springer Nature Switzerland.
2024 | M. David, K. Dröder: Robot-Guided End Effector for an Automated Finishing of Concrete Free-Form Surfaces Fourth RILEM International Conference on Concrete and Digital Fabrication Munich, RILEM Bookseries, Volume 53, Springer, 2024, https://doi.org/10.1007/978-3-031-70031-6_7
Data | Bild- und Videodaten zu Versuchsreihe “Verformung von flexiblem Oberflächenendeffektor”, LeoPARD, 2025, https://doi.org/10.24355/dbbs.084-202503071410-0.
2023 | David, M., Freund, N., Dröder, K., Lowke, D.: The effects of nozzle diameter and length on the resulting strand properties for shotcrete 3D printing. In: Material and Structures 56, 157 (2023).
https://doi.org/10.1617/s11527-023-02246-1
2023 | R. Dörrie, N. Freund, E. Herrmann, A. Baghdadi, I., Mai, F. Galli, M. David, K. Dröder, D. Lowke, H. Kloft: Automated force-flow-oriented reinforcement integration for Shotcrete 3D Printing. In: Automation in Construction, 155, p.105075, https://doi.org/10.1016/j.autcon.2023.105075
https://doi.org/10.3390/buildings12111806
2023 | N. Freund, M. David, D. Böhler, I. Mai, S. Ullmann, K. Dröder, D. Lowke: Shotcrete 3D Printing – Interaction of nozzle geometry, homogeneity and hardened concrete properties. In: International Conference on Building Materials (ibausil) 2023
is a doctoral researcher at the TT Professorship for Digital Fabrication within TUM. With background in structural design and engineering, he will develop strategies for using mobile robotic systems performing extrusion-based AM on construction sites. Fundamentally, this work is interdisciplinary, and he therefore strives for a high degree of collaboration within, but not limited to, the TRR277.
Project(s)
Principles of Mobile Robotics for Additive Manufacturing in Construction
Central Tasks of the AMC
Publications
All publications from M. Sc. Gido DielemansPublications from M. Sc. Gido Dielemans
Publications
2024 | S. Cutajar, G. Dieleman, E. Krakovska: Upscaling earth formworks: 3D printing strategies for material optimised reinforced concrete structures Constr Robot 8, 2024, https://doi.org/10.1007/s41693-024-00120-2
2024 | G. Dielemans, L. Lachmayer, N. Khader, N. Hack, A. Raatz, K. Dörfler: Robotic Repair: In-Place 3D Printing for Repair of Building Components Using a Mobile Robot Construction 3D Printing, 2024, https://doi.org/10.1007/978-3-031-64269-2_20
2025 | K. Dörfler, G. Dielemans, S. Leutenegger, S.E. Jenny, J. Pankert, J. Sustarevas, L. Lachmayer, A. Raatz, D. Lowke: Advancing construction in existing contexts: Prospects and barriers of 3d printing with mobile robots for building maintenance and repair Cement and Concrete Research, 186, 2025, https://doi.org/10.1016/j.cemconres.2024.107656
2023 | G. Dielemans, L. Lachmayer, N. Kadher, N. Hack, A. Raatz, K. Dörfler: Robotic Repair: In-place 3D Printing for Repair of Building Components using a Mobile Robot. In: 4th International Conference on 3D Construction Printing (4th 3DcP), Singapore; Springer.
2022 | Dielemans, G.; Lachmayer, L.; Recker, T.; Atanasova, L.; Hechtl, M.; Matthäus, C.; Raatz, A.; Dörfler, K.: Mobile Additive Manufacturing: A Case Study of Clay Formwork for Bespoke in Situ Concrete Construction. In: Buswell, R., Blanco, A., Cavalaro, S., Kinnell, P. (eds) Third RILEM International Conference on Concrete and Digital Fabrication. DC 2022. RILEM Bookseries, vol 37. Springer, Cham.
https://doi.org/10.1007/978-3-031-06116-5_3
2022 | Dörfler, K.; Dielemans, G.; Lachmayer, L.; Recker, T.; Raatz, A.; Lowke, D.; Gerke, M.: Additive Manufacturing using mobile robots: Opportunities and challenges for building construction. In: Cem. Concr. Res., vol. 158, Aug. 2022, doi: 10.1016/J.CEMCONRES.2022.106772.
2022 | Lachmayer, Recker, T.; Dielemans, G.; Dörfler, K.; Raatz, A.: Autonomous sensing and localization of a mobile robot for multi-step additive manufacturing in construction. In: 24th International society for photogrammetry and remote sensing, 2022
https://doi.org/10.5194/isprs-archives-XLIII-B1-2022-453-2022
2021 | Dielemans, G., Briels, D., Jaugstetter, F., Henke, K., Dörfler, K.: Additive Manufacturing of Thermally Enhanced Lightweight Concrete Wall Elements with Closed Cellular Structures. In: Journal of Facade Design & Engineering, 9(1), 59–72. – DOI: https://doi.org/10.7480/jfde.2021.1.5418.
2021 | Dielemans, G., Dörfler, K.: Mobile Additive Manufacturing: a robotic system for cooperative on-site construction. In: IROS 2021 Workshop Robotic Fabrication: Sensing in Additive Construction, 2021.
Sebastian Dietrich began his career with an apprenticeship as a formwork carpenter (2002-2005), later attending craftsman school and working in construction and architectural firms until 2010. He then studied International Civil Engineering at the University of Applied Sciences in Mainz and completed a Masters in Archineering at the Bauhaus University in Weimar, gaining experience in architecture and structural design. From 2017 to 2022, he worked at Bollinger+Grohmann as a structural engineer, focusing on projects involving existing structures and parametric design. Since 2021, he has been a research assistant at the Chair of Structural Design, researching topological interlocking structures, especially in the context of 3D concrete printing.
Project(s)
3D Structural Puzzle – Numerical Multi Scale Shape and Topology Optimisation Methods to Additively Manufacture Optimal Structures from Optimised Pieces
Publications from M. Sc. Sebastian Charles Dietrich
Publications
2025 | S. Dietrich, P. Schneider, C. Richter, Asl R. Najian, K. Dörfler, K-U. Bletzinger, P. D´Acunto: Multi-fidelity structural design for 3D concrete printing with selective paste intrusion Automation in Construction, 179, 2025, DOI: 10.1016/j.autcon.2025.106352
Data |Zenodo, 2025, https://doi.org/10.5281/zenodo.17910971
is a researcher at Institute of Building Materials, Concrete Construction and Fire Safety and works for the project A01.
Project(s)
Particle-Bed 3D Printing by Selective Cement Activation (SCA) – Sustainability, process enhancement and material models
Publications
All publications from M. Sc. Evelien DorresteijnPublications from M. Sc. Evelien Dorresteijn
Publications
leads the scientific staff in the conception and execution of the research, and in questions of validation of the proposed methods. She is also responsible for the coordination of the cooperating research projects in the TRR 277. She is the Co-Spokesperson of the TRR 277. Dörfler supports Kloft as contact person for the DFG, in general public relation matters and also in representing the TRR 277 externally. Internally, Dörfler assists Kloft in the coordination between the research projects, as well as in the decisions on the financing of research tasks in the TRR 277.
Project(s)
Earth Additive Manufacturing (EAM) – Material and Process Combinations for AM with Earth-based Materials
Principles of Mobile Robotics for Additive Manufacturing in Construction
Learning, Sustainability, Design: Gender-equitable introduction of AMC to the public
Central Tasks of the AMC
Publications from Prof. Dr. sc. ETH Kathrin Dörfler
Publications
2025 | S. Dietrich, P. Schneider, C. Richter, Asl R. Najian, K. Dörfler, K-U. Bletzinger, P. D´Acunto: Multi-fidelity structural design for 3D concrete printing with selective paste intrusion Automation in Construction, 179, 2025, DOI: 10.1016/j.autcon.2025.106352
Data |Zenodo, 2025, https://doi.org/10.5281/zenodo.17910971
2025 |A. Keune, E. Manz, C.Y.J. Siry, J. Rowsell, K. Dörfler, K. Kumpulainen, K. Peppler, M. Schalk, N. Thompson, P. D´Acunto, S. Wilmes, S. Jurow: Design Future(s) Collective: New Directions for Educational Design Research 19th International Conference of the Learning Sciences—ICLS, 2025, https://doi.org/10.22318/icls2025.253440
2024 |E. Krakovska, D. Briels, A. Straßer, T. Kränkel, T. Auer, C. Gehlen, P. D´Acunto, K. Dörfler: Functionally Hybridised Lightweight Concrete Components: Monolithic Building Construction Using Selective Paste Intrusion Digital Concrete 2024, 2024, https://doi.org/10.1007/978-3-031-70031-6_41
2024 | G. Dielemans, L. Lachmayer, N. Khader, N. Hack, A. Raatz, K. Dörfler: Robotic Repair: In-Place 3D Printing for Repair of Building Components Using a Mobile Robot Construction 3D Printing, 2024, https://doi.org/10.1007/978-3-031-64269-2_20
2025 | K. Dörfler, G. Dielemans, S. Leutenegger, S.E. Jenny, J. Pankert, J. Sustarevas, L. Lachmayer, A. Raatz, D. Lowke: Advancing construction in existing contexts: Prospects and barriers of 3d printing with mobile robots for building maintenance and repair Cement and Concrete Research, 186, 2025, https://doi.org/10.1016/j.cemconres.2024.107656
2025 | A. Keune, Z. Simsic, H.Kloft, k. Dörfler: AMC Edu:Lab Design to Learn About Additive Manufacturing in Construction, Proceedings of the 24th Interaction Design and Children, 2025, . https://doi.org/10.1145/3713043.3728843
Data | Zenodo, 2026, https://doi.org/10.5281/zenodo.20719478
2024 |J. Fleckenstein, B. Knychalla, D. Briels, A. Baghdadi, G. Placzek, F. Herding, P. Schwerdtner, T. Auer, D. Lowke, H. Kloft, K. Dörfler, P. Ayres, M. Thomson , R. Sheil, M. Skavara: BREUER X AM: FUNCTIONAL HYBRIDISATION IN CONCRETE BUILDING ENVELOPE ELEMENTS THROUGH ADDITIVE MANUFACTURING Fabricate 2024: Creating Resourceful Futures, 2024, https://doi.org/10.2307/jj.11374766.29
2024 |J. Fleckenstein, B. Knychalla, D. Briels, A. Baghdadi, G. Placzek, F. Herding, P. Schwerdtner, T. Auer, D. Lowke, H. Kloft, K. Dörfler, P. Ayres, M. R. Thomsen, B. Sheil, M. Skavara: BREUER X AM: Functional hybridisation in concrete building envelope elements through additive manufacturing, Fabricate 2024: Creating Resourceful Futures, UCL Press, 2024, 196–205, https://doi.org/10.2307/jj.11374766.29
2023 | G. Dielemans, L. Lachmayer, N. Kadher, N. Hack, A. Raatz, K. Dörfler: Robotic Repair: In-place 3D Printing for Repair of Building Components using a Mobile Robot. In: 4th International Conference on 3D Construction Printing (4th 3DcP), Singapore; Springer.
2023 | D. Briels, M. Renz, A. Nouman, A. Straßer, M. Hechtl, M. Dahlenburg, B. Knychalla, P. Sonnleitner, F. Herding, J. Fleckenstein, E. Krakovská, K. Dörfler, T. Auer: Monolithic AM Façade: Multi-Objective Parametric Design Optimization of Additively Manufactured Insulating Wall Elements. In: Frontiers in Built Environment ., vol. 9, 2023 doi: 10.3389/fbuil.2023.1286933
2022 | Dielemans, G.; Lachmayer, L.; Recker, T.; Atanasova, L.; Hechtl, M.; Matthäus, C.; Raatz, A.; Dörfler, K.: Mobile Additive Manufacturing: A Case Study of Clay Formwork for Bespoke in Situ Concrete Construction. In: Buswell, R., Blanco, A., Cavalaro, S., Kinnell, P. (eds) Third RILEM International Conference on Concrete and Digital Fabrication. DC 2022. RILEM Bookseries, vol 37. Springer, Cham.
https://doi.org/10.1007/978-3-031-06116-5_3
2022 | Dörfler, K.; Dielemans, G.; Lachmayer, L.; Recker, T.; Raatz, A.; Lowke, D.; Gerke, M.: Additive Manufacturing using mobile robots: Opportunities and challenges for building construction. In: Cem. Concr. Res., vol. 158, Aug. 2022, doi: 10.1016/J.CEMCONRES.2022.106772.
2022 | Lachmayer, Recker, T.; Dielemans, G.; Dörfler, K.; Raatz, A.: Autonomous sensing and localization of a mobile robot for multi-step additive manufacturing in construction. In: 24th International society for photogrammetry and remote sensing, 2022
https://doi.org/10.5194/isprs-archives-XLIII-B1-2022-453-2022
2021 | Borrmann, A.; Bruckmann, T.; Dörfler, K.; Hartmann, T.; Smarsly, K.: Towards realizing the information backbone of robotized construction – Computational methods and cyber-physical architectures for collaborative robotic fleets. In: Proc. of the CIB W78 Conference, 2021.
2021 | Dielemans, G., Briels, D., Jaugstetter, F., Henke, K., Dörfler, K.: Additive Manufacturing of Thermally Enhanced Lightweight Concrete Wall Elements with Closed Cellular Structures. In: Journal of Facade Design & Engineering, 9(1), 59–72. – DOI: https://doi.org/10.7480/jfde.2021.1.5418.
2021 | Dielemans, G., Dörfler, K.: Mobile Additive Manufacturing: a robotic system for cooperative on-site construction. In: IROS 2021 Workshop Robotic Fabrication: Sensing in Additive Construction, 2021.
2021 | Kloft, H., Gehlen, C., Dörfler, K., Hack, N., Henke, K., Lowke, D., Mainka, J. and Raatz, A. (2021), TRR 277: Additive Fertigung im Bauwesen. In: Bautechnik, 98: 222-231. – DOI: https://doi.org/10.1002/bate.202000113.
is a doctoral researcher for the duration of the research project. He is leading the A04 project and organising the development of new concepts and strategies for the integration of reinforcement in SC3DP elements. Furthermore he is investigating the SC3DP process, its limitations and the spatial effect for the application in architecture and design within the work group of Prof. Dr.-Ing. Harald Kloft. Moreover, he will frequently publish the results achieved within the community.
Project(s)
Integrated Additive Manufacturing Processes for Reinforced Shotcrete 3D Printing (SC3DP) Elements with Precise Surface Quality
Publications
All publications from M. Sc. Robin DörriePublications from M. Sc. Robin Dörrie
Publications
2025 | R. Dörrie, S. Gantner, F.S. Amiri, L. Lachmayer, M. David, T. Rothe, N. Freund, A. Nouman, K. Mawas, O. Oztoprak, P. Renner: From Digital to Real: Optimised and Functionally Integrated Shotcrete 3D Printing Elements for Multi-Storey Structures, Buildings 2025, Special Issue Robotics, Automation and Digitization in Construction, 2025, https://doi.org/10.3390/buildings15091461
2025 | R. Dörrie, L. Lachmayer, A. Baghdadi, M. David, K. Dröder, A. Raatz, H. Kloft: Investigation on process guidelines and geometric capabilities for robust shotcrete 3D printing, Materials & Design, 2025, https://doi.org/10.1016/j.matdes.2025.115050
Data | LeoPARD, 2025, https://doi.org/10.24355/dbbs.084-202510271126-0
2025 | R. Dörrie, L. Lachmayer, A. Baghdadi, M. David, K. Dröder, A. Raatz, H. Kloft: Investigation on process guidelines and geometric capabilities for robust shotcrete 3D printing Materials & Design, 2025, 115050, https://doi.org/10.1016/j.matdes.2025.115050
Data |LeoPARD, 2025, https://doi.org/10.24355/dbbs.084-202510271126-0
2024 | R. Dörrie, M. David, N. Freund, D. Lowke, K. Dröder, H. Kloft: Surface Processing of Shotcrete 3D Printed Concrete Elements Using a Rotating Trowel Disc–Influence of Timing on Resulting Surface Quality RILEM International Conference on Concrete and Digital Fabrication, pp. 397-404, Cham: Springer Nature Switzerland.
2024 | R. Dörrie, H. Kloft, B. Sawicki, N. Freund, D. Lowke: Automated Reinforcement Integration in Shotcrete 3D Printing Through Green State Milling RILEM International Conference on Concrete and Digital Fabrication, pp. 319-326, Cham: Springer Nature Switzerland, https://doi.org/10.1007/978-3-031-70031-6_37
Data | Photographs of cross-section of automated reinforcement integration in Shotcrete 3D Printing through green state milling, LeoPARD, 2024, https://doi.org/10.24355/dbbs.084-202403201419-0
2024 | L. Lachmayer, J. Quantz, H. Heeren, T. Recker, R. Dörrie, H. Kloft, A. Raatz: A spatial multi-layer control concept for strand geometry control in robot-based additive manufacturing processes Fourth RILEM International Conference on Concrete and Digital Fabrication Munich, RILEM Bookseries, vol 53, Springer, 2024, https://doi.org/10.1007/978-3-031-70031-6_14
2024 | L. Lachmayer, T. Recker, L. Dittrich, R. Dörrie, H. Kloft, A. Raatz: Inline image-based reinforcement detection for concrete additive manufacturing processes using a convolutional neural network Proceedings of the 41st ISARC,2024 https://doi.org/10.22260/ISARC2024/0007
Data | ReinforcementInFoam_Image_Dataset, Zenodo, 2025, https://doi.org/10.5281/zenodo.15096976.
2023 | R. Dörrie, N. Freund, E. Herrmann, A. Baghdadi, I., Mai, F. Galli, M. David, K. Dröder, D. Lowke, H. Kloft: Automated force-flow-oriented reinforcement integration for Shotcrete 3D Printing. In: Automation in Construction, 155, p.105075, https://doi.org/10.1016/j.autcon.2023.105075
https://doi.org/10.3390/buildings12111806
2022 | R. Dörrie, V. Laghi, L. Arrè, G. Kienbaum, N. Babovic, N. Hack, H. Kloft: Combined Additive Manufacturing Techniques for Adaptive Coastline Protection Structures. In: Buildings, vol. 12, no. 11, p. 1806, 2022.
https://doi.org/10.3390/buildings12111806
2022 | R. Dörrie, and H. Kloft: Force-Flow compliant robotic path planning approach for reinforced concrete elements. In Proc. Int. Conf. on Concrete and Digital Fabrication, 2022, pp. 370-375.
2022 | Lachmayer L., Dörrie R., Kloft H., Raatz A.: Process Control for Additive Manufacturing of Concrete Components. In: RILEM Bookseries Vol. 37, pp. 351-356, (3rd RILEM International Conference on Concrete and Digital Fabrication (DC 2022), England), (6 pages), https://doi.org/10.1007/978-3-031-06116-5_52
2021 | Lachmayer, L.; Dörrie, R.; Kloft,H.; Raatz, A.: Automated shotcrete 3D printing – Printing interruption for extended component complexity. In: ISARC, 2021.
2021 | Baghdadi, A.; Doerrie, R.; Kloft, H.: New calculation approach for selecting and orienting the reinforcing material for robotic concrete manufacturing. In: Proceedings of the IASS Annual Symposium 2020/21 and the 7th International Conference on Spatial Structures Inspiring the Next Generation. 23 – 27 August, Guilford, UK, 2021.
advises the scientific staff in continuous consideration of the defined research objectives and investigates opportunities to generate novel research projects and publications. He is responsible for the content and organisational coordination of all work on the part of IWF.
Project(s)
Integrated Additive Manufacturing Processes for Reinforced Shotcrete 3D Printing (SC3DP) Elements with Precise Surface Quality
Publications
All publications from Prof. Dr.-Ing. Klaus DröderPublications from Prof. Dr.-Ing. Klaus Dröder
Publications
2025 | R. Dörrie, L. Lachmayer, A. Baghdadi, M. David, K. Dröder, A. Raatz, H. Kloft: Investigation on process guidelines and geometric capabilities for robust shotcrete 3D printing, Materials & Design, 2025, https://doi.org/10.1016/j.matdes.2025.115050
Data | LeoPARD, 2025, https://doi.org/10.24355/dbbs.084-202510271126-0
2025 | R. Dörrie, L. Lachmayer, A. Baghdadi, M. David, K. Dröder, A. Raatz, H. Kloft: Investigation on process guidelines and geometric capabilities for robust shotcrete 3D printing Materials & Design, 2025, 115050, https://doi.org/10.1016/j.matdes.2025.115050
Data |LeoPARD, 2025, https://doi.org/10.24355/dbbs.084-202510271126-0
2024 | R. Dörrie, M. David, N. Freund, D. Lowke, K. Dröder, H. Kloft: Surface Processing of Shotcrete 3D Printed Concrete Elements Using a Rotating Trowel Disc–Influence of Timing on Resulting Surface Quality RILEM International Conference on Concrete and Digital Fabrication, pp. 397-404, Cham: Springer Nature Switzerland.
2024 | M. David, K. Dröder: Robot-Guided End Effector for an Automated Finishing of Concrete Free-Form Surfaces Fourth RILEM International Conference on Concrete and Digital Fabrication Munich, RILEM Bookseries, Volume 53, Springer, 2024, https://doi.org/10.1007/978-3-031-70031-6_7
Data | Bild- und Videodaten zu Versuchsreihe “Verformung von flexiblem Oberflächenendeffektor”, LeoPARD, 2025, https://doi.org/10.24355/dbbs.084-202503071410-0.
2023 | David, M., Freund, N., Dröder, K., Lowke, D.: The effects of nozzle diameter and length on the resulting strand properties for shotcrete 3D printing. In: Material and Structures 56, 157 (2023).
https://doi.org/10.1617/s11527-023-02246-1
2023 | R. Dörrie, N. Freund, E. Herrmann, A. Baghdadi, I., Mai, F. Galli, M. David, K. Dröder, D. Lowke, H. Kloft: Automated force-flow-oriented reinforcement integration for Shotcrete 3D Printing. In: Automation in Construction, 155, p.105075, https://doi.org/10.1016/j.autcon.2023.105075
https://doi.org/10.3390/buildings12111806
2023 | N. Freund, M. David, D. Böhler, I. Mai, S. Ullmann, K. Dröder, D. Lowke: Shotcrete 3D Printing – Interaction of nozzle geometry, homogeneity and hardened concrete properties. In: International Conference on Building Materials (ibausil) 2023
has a background in architecture. Currently, he is a research associate at the Institute of Structural Design (ITE) at TU Braunschweig. His work on Injection 3D Concrete Printing (I3DCP) focuses on investigating strategies for design and fabrication as well as architectural applications. In collaboration with material researchers from TU Berlin, he conducts experiments on material and fabrication parameters, path planning and robot end-effector designs.
Project(s)
Injection 3D Concrete Printing (I3DCP) – Material Efficient Lightweight Reinforced Concrete Structures Based on Spatially Complex Strut-and-Tie-Models
Publications
All publications from M. Sc. Leon DöringPublications from M. Sc. Leon Döring
Publications
2026 |I. Mai, A. Jacobi, L. Döring, N. Hack: Fabrication of Lightweight and Modular Components with Injection 3D Concrete Printing Beton- und
Stahlbetonbau, pp. 1–4, 2026, https://doi.org/10.1002/best.70152
is a structural engineer and doctoral researcher at the TUB Institute for Structural Design (ITE). He is responsible for Project A10 where he is researching on Sprayed Earth Additive Manufacturing (SEAM). This includes general investigations on earthen constructions as well as development of the SEAM process and the optimization of material-process interactions. Within the project, he will carry out experimental studies and systematically evaluate the data in order to determine the key parameters of the SEAM process. In addition, he will design and investigate suitable applications in the context of construction in collaboration with other sub-projects.
Project(s)
Earth Additive Manufacturing (EAM) – Material and Process Combinations for AM with Earth-based Materials
Publications
All publications from M. Sc. Hannes EichlerPublications from M. Sc. Hannes Eichler
Publications
2026 | H.Eichler, B.Sawicki, H.Kloft: Hybrid wire and arc additive manufactured I-section beams: assessment of material efficiency and carbon footprint, Arch. Civ. Mech. Eng., 2026, https://doi.org/10.1007/s43452-025-01380-7
is a doctoral researcher at the IWF. He will be developing finite element models to be used in additive manufacturing. He will lead the implementation of mathematical approaches for model order reduction and work on system sensorization. He will frequently publish the results achieved within the community.
Project(s)
Process Control and Adaptive Path Planning for Additive Manufacturing Processes Based on Industrial Robots with an Extended Degree of Freedom
Publications
All publications from M. Sc. Virama EkanayakaPublications from M. Sc. Virama Ekanayaka
Publications
2024 | L. Lachmayer, T. Recker, V. Ekanayaka, A. Hürkamp, A. Raatz: Multi-model based additive manufacturing: A framework for automated large-scale 3D concrete printing with industrial robots, Proceedings of 2024 IEEE 20th International Conference on Automation Science and Engineering (CASE), https://doi.org/10.1109/CASE59546.2024.10711326
Data |Zenodo, 2025, https://doi.org/10.5281/zenodo.17899305
2023 |A. Hürkamp, V. Ekanayaka: A novel surrogate modelling approach for additive manufacturing processes in: PAMM (2023)
2023 |V. Ekanayaka, A. Hürkamp: Modeling of additive manufacturing processes with time-dependent material properties using physics-informed neural networks. In: PAMM (2023)
2022 | Ekanayaka, V.; Hürkamp, A. : Implementation of a surrogate model for a novel path-based finite element simulation for additive manufacturing processes in construction. In: PAMM. (2022.)
2022 | Ekanayaka, V.; Lachmayer, L.; Raatz, A; Hürkamp, A.: Approach to optimize the interlayer waiting time in additive manufacturing with concrete utilizing FEM modeling. In: Procedia CIRP Design, 2022
https://doi.org/10.1016/j.procir.2022.05.295
2021 | Lachmayer, L.; Ekanayaka, V.; Hürkamp, A.; Raatz, A.: Approach to an optimized printing path for additive manufacturing in construction utilizing FEM modeling. In: Procedia CIRP CMS, 2021.
M.Sc. Janika Fischer is a doctoral researcher at the Chair of Computing in Civil and Building Engineering at the Technical University of Munich. Her research focuses on cyber-physical systems for Additive Manufacturing in Construction (AMC), with an emphasis on sensor integration, real-time monitoring, and machine learning for adaptive process control. This includes developing approaches for real-time defect detection and enabling manufacturing systems to adapt dynamically to changing process conditions during printing.
Project(s)
Integrating Digital Design and Additive Manufacturing through BIM-Based Decision Support and Digital Twin Methods
Publications
All publications from M. Sc. Janika FischerPublications from M. Sc. Janika Fischer
Publications
is a doctoral researcher at the TT Professorship for Digital Fabrication at TUM with background in architecture. In her research, she explores site-specific digital design tools for robotically fabricated real-size mono-component building envelopes. As part of her association with the AMC, she is part of the interdisciplinary teaching team for the project “From Additive Manufacturing to Architecture” in 2022 and contributes as Design Lead for the collaborative demonstrator “Breuer x AM”.
Publications
All publications from Dipl. Ing. Julia FleckensteinPublications from Dipl. Ing. Julia Fleckenstein
Publications
2024 |J. Fleckenstein, B. Knychalla, D. Briels, A. Baghdadi, G. Placzek, F. Herding, P. Schwerdtner, T. Auer, D. Lowke, H. Kloft, K. Dörfler, P. Ayres, M. Thomson , R. Sheil, M. Skavara: BREUER X AM: FUNCTIONAL HYBRIDISATION IN CONCRETE BUILDING ENVELOPE ELEMENTS THROUGH ADDITIVE MANUFACTURING Fabricate 2024: Creating Resourceful Futures, 2024, https://doi.org/10.2307/jj.11374766.29
2024 |J. Fleckenstein, B. Knychalla, D. Briels, A. Baghdadi, G. Placzek, F. Herding, P. Schwerdtner, T. Auer, D. Lowke, H. Kloft, K. Dörfler, P. Ayres, M. R. Thomsen, B. Sheil, M. Skavara: BREUER X AM: Functional hybridisation in concrete building envelope elements through additive manufacturing, Fabricate 2024: Creating Resourceful Futures, UCL Press, 2024, 196–205, https://doi.org/10.2307/jj.11374766.29
2023 | D. Briels, M. Renz, A. Nouman, A. Straßer, M. Hechtl, M. Dahlenburg, B. Knychalla, P. Sonnleitner, F. Herding, J. Fleckenstein, E. Krakovská, K. Dörfler, T. Auer: Monolithic AM Façade: Multi-Objective Parametric Design Optimization of Additively Manufactured Insulating Wall Elements. In: Frontiers in Built Environment ., vol. 9, 2023 doi: 10.3389/fbuil.2023.1286933
Project leader in A03 and B02. He instructs and supports the academic staff regarding bulk conveying and machine design questions.
Project(s)
Extrusion of Near-Nozzle Mixed Concrete –Individually Graded in Density and in Rate of 3D Fibre Reinforcement
Publications from Prof. Dr.-Ing. Johannes Fottner
Publications
2026 | S. Cheng, B. Grimm, M. Unterreiner, M. Hechtl, M. Dahlenburg, T. Kränkel, J. Fottner, C. Gehlen, F. Bos: Properties of the transition region in 3D printed functionally graded concrete through Near Nozzle Binder-Aggregate Mixing (NNBAM) Construction and Building Materials, Volume 520. 2026, https://doi.org/10.1016/j.conbuildmat.2026.145990
Data | Zenodo, 2026, https://doi.org/10.5281/zenodo.18899746
2021 | Tan, Y.; Dahlenburg, M.; Kessler, S.; Fottner, J.: Virtual Prototyping mit DEM zur Entwicklung eines Near-Nozzle-Mixing Verfahrens für den additiven 3D Betondruck für den Roboter Einsatz. In: 25. Fachtagung Schüttgutfördertechnik. OVGU Magdeburg, 2021.
Markus Freidhofer is a research associate in the workgroup of Prof. Dr.-Ing. Michael F. Zäh. His research focuses on the combined process of stud welding and wire arc additive manufacturing (WAAM) for the production of structural reinforcements. This includes the simulation of the combined process, as well as process control and process monitoring for quality-assured manufacturing
Project(s)
Particle-Bed 3D Printing by Selective Cement Paste Intrusion (SPI) – Particle Surface Functionalisation, Particle Synthesis and Integration of WAAM Reinforcement
Publications
All publications from M. Sc. Markus FreidhoferPublications from M. Sc. Markus Freidhofer
Publications
is a doctoral researcher for the duration of the research project. He will lead and organise the material development and testing program as well as the data evaluation and material modelling work within WG Lowke. Moreover, he will frequently publish the results achieved within the community.
Project(s)
Integrated Additive Manufacturing Processes for Reinforced Shotcrete 3D Printing (SC3DP) Elements with Precise Surface Quality
Publications
All publications from M. Sc. Niklas FreundPublications from M. Sc. Niklas Freund
Publications
2025 | R. Dörrie, S. Gantner, F.S. Amiri, L. Lachmayer, M. David, T. Rothe, N. Freund, A. Nouman, K. Mawas, O. Oztoprak, P. Renner: From Digital to Real: Optimised and Functionally Integrated Shotcrete 3D Printing Elements for Multi-Storey Structures, Buildings 2025, Special Issue Robotics, Automation and Digitization in Construction, 2025, https://doi.org/10.3390/buildings15091461
2024|H. Kloft, B. Sawicki, F. Bos, R. Dörrie, N. Freund, S. Gantner, L. Gebhard, N. Hack, E. Ivaniuk, J. Kruger, W. Kaufmann: Interaction of reinforcement, process, and form in Digital Fabrication with Concrete, Cement and Concrete Research Volume 186, 2024, https://doi.org/10.1016/j.cemconres.2024.107640
2024 | R. Dörrie, M. David, N. Freund, D. Lowke, K. Dröder, H. Kloft: Surface Processing of Shotcrete 3D Printed Concrete Elements Using a Rotating Trowel Disc–Influence of Timing on Resulting Surface Quality RILEM International Conference on Concrete and Digital Fabrication, pp. 397-404, Cham: Springer Nature Switzerland.
2024 | R. Dörrie, H. Kloft, B. Sawicki, N. Freund, D. Lowke: Automated Reinforcement Integration in Shotcrete 3D Printing Through Green State Milling RILEM International Conference on Concrete and Digital Fabrication, pp. 319-326, Cham: Springer Nature Switzerland, https://doi.org/10.1007/978-3-031-70031-6_37
Data | Photographs of cross-section of automated reinforcement integration in Shotcrete 3D Printing through green state milling, LeoPARD, 2024, https://doi.org/10.24355/dbbs.084-202403201419-0
2024 |N. Freund, M. David, K. Dröder, D. Lowke: Vibrated Short Rebar Insertion – The Effect of Integration Time on the Resulting Bond Quality, Proceedings of Fourth RILEM International Conference on Concrete and Digital Fabrication (DC 2024), RILEM Bookseries, vol. 53, Springer, Cham, 2024, https://doi.org/10.1007/978-3-031-70031-6_38.
2023 |D. Böhler, N. Freund, I. Mai, D. Lowke: Shotcrete 3D printing – effect of material‐process interaction on the global and local material density, ce/papers, 2023, 6, 770–776, https://doi.org/10.1002/cepa.2822
2023 | David, M., Freund, N., Dröder, K., Lowke, D.: The effects of nozzle diameter and length on the resulting strand properties for shotcrete 3D printing. In: Material and Structures 56, 157 (2023).
https://doi.org/10.1617/s11527-023-02246-1
2023 | R. Dörrie, N. Freund, E. Herrmann, A. Baghdadi, I., Mai, F. Galli, M. David, K. Dröder, D. Lowke, H. Kloft: Automated force-flow-oriented reinforcement integration for Shotcrete 3D Printing. In: Automation in Construction, 155, p.105075, https://doi.org/10.1016/j.autcon.2023.105075
https://doi.org/10.3390/buildings12111806
2023 | N. Freund, M. David, D. Böhler, I. Mai, S. Ullmann, K. Dröder, D. Lowke: Shotcrete 3D Printing – Interaction of nozzle geometry, homogeneity and hardened concrete properties. In: International Conference on Building Materials (ibausil) 2023
2023 | D. Böhler, N. Freund, I. Mai, D. Lowke, D: Shotcrete 3D Printing – Effect of material-process interaction on the global and local material density. In: International Conference on Building Materials (ibausil) 2023
2022 | Lachmayer, L.; Böhler, D.; Freund, N.; Mai, I.; Lowke, D.; Raatz, A.: Modelling the influence of material and process parameters on shotcrete 3D printing strands – cross-section adjustment for automatic robotic manufacturing. Automation in Construction, Volume 145, https://doi.org/10.1016/j.autcon.2022.104626
2022 | Lowke, D.; Gehlen, C.; Kloft, H.; Freund, N.; Matthäus, C.: Bewehrungskonzepte beim 3D-Druck von Konstruktionsbeton. In: BfT International, 02.2021, S. 92.
2022 | Böhler, D., Mai, I., Freund, N., Lachmayer, L., Raatz, A., Lowke, D.: Influence of Material and Process Parameters on Hardened State Properties of Shotcrete 3D-Printed Elements. In: Buswell, R., Blanco, A., Cavalaro, S., Kinnell, P. (eds) Third RILEM International Conference on Concrete and Digital Fabrication. DC 2022. RILEM Bookseries, vol 37. Springer, Cham.
https://doi.org/10.1007/978-3-031-06116-5_38
2022 | Buswell, R. A.; Bos, F. P.; Leal da Silva, W. R.; Hack, N.; Kloft, H.; Lowke, D.; Freund, N.; Fromm, A.; Dini, E.; Wangler, T.; Lloret-Fritschi, E.; Schipper, R.; Mechtcherine, V.; Perrot, A.; Vasilic, K.; Roussel, N.: Digital Fabrication with Cement-Based Materials: Process Classification and Case Studies. In: Roussel, N. and Lowke, D. (2022). Digital Fabrication with Cement-Based Materials (Reports 36). RILEM State-of-the-Art. DOI: https://doi.org/10.1007/978-3-030-90535-4_2
2022 | Freund, N., & Lowke, D.: Interlayer Reinforcement in Shotcrete-3D-Printing: Interlayer Reinforcement in Shotcrete-3D-Printing: The Effect of Accelerator Dosage on the Resulting Bond Behavior of Integrated Reinforcement Bars. In: Open Conference Proceedings, 1, 83–95, 2022
https://doi.org/10.52825/ocp.v1i.72
2021 | Mai, I.; Brohmann, L.; Freund, N.; Gantner, S.; Kloft, H.; Lowke, D.; Hack, N.: Large Particle 3D Concrete Printing – A Green and Viable Solution. In: Materials, 14, 6125, 2021. DOI: https://doi.org/10.3390/ma14206125.
2021 | Lowke, D.; Gehlen, C.; Kloft, H.; Freund, N.; Matthäus, C.: Bewehrungskonzepte beim 3D-Druck von Konstruktionsbeton. In: BfT International, 02.2021, S. 92, 2021.
2020 | Freund, N.; Dressler, I.; Lowke, D.: Studying the Bond Properties of Vertical Integrated Short Reinforcement in the Shotcrete 3D Printing Process. In: RILEM Bookseries 28, pp. 612–621, 2020. – DOI: https://doi.org/10.1007/978-3-030-49916-7_62.
2020 | Dressler, I.; Freund, N.; Lowke, D.: Control of Strand Properties Produced with Shotcrete 3D Printing by Accelerator Dosage amd Process Parameters. In: RILEM Bookseries 28, pp. 42–52, 2020. – DOI: https://doi.org/10.1007/978-3-030-49916-7_5.
2020 | Dreßler, I.; Freund, N.; Lowke, D.: The Effect of Accelerator Dosage on Fresh Concrete Properties and on Interlayer Strength in Shotcrete 3D Printing. In: Materials 2020, 13, 374, 2020. – DOI: https://doi.org/10.3390/ma13020374.


























