A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Integrating Reinforcement with 3D Concrete Printing: Experiments and Numerical Modelling
3D Concrete Printing (3DCP) is a technology that recently has attracted the attention of both academia and industry. The technology offers an increased design flexibility and has been used at various scales, e.g. from furniture to bridges and houses. One of the current challenges in 3DCP is to produce load bearing structures in a single process, i.e. reinforced elements as part of 3DCP process. This is because the integration of vertical reinforcement during the printing process is not trivial. Although few reinforcement methods have been studied, a robust and efficient 3DCP reinforcement solution is yet to be coined. To support these studies in finding a reinforcement solution fit for 3DCP, while limiting experimental efforts, we offer a computational fluid dynamics (CFD) model that simulate concrete flow around rebars. The numerical model applies 1) an elasto-visco-plastic constitutive law to mimic the flow behavior of the concrete and 2) the volume of fluid method to track the free surface of the concrete. To validate the proposed model, 3DCP experiments are carried out by printing around horizontal and vertical rebars. The rheological behavior of the concrete is characterized on a rheometer using a vane-in-cup measuring system, and such data is included in the CFD model. The experimental and numerical results agree relatively well; providing a new venue for identifying printing strategies that ensures a good bonding between concrete and reinforcement.
Integrating Reinforcement with 3D Concrete Printing: Experiments and Numerical Modelling
3D Concrete Printing (3DCP) is a technology that recently has attracted the attention of both academia and industry. The technology offers an increased design flexibility and has been used at various scales, e.g. from furniture to bridges and houses. One of the current challenges in 3DCP is to produce load bearing structures in a single process, i.e. reinforced elements as part of 3DCP process. This is because the integration of vertical reinforcement during the printing process is not trivial. Although few reinforcement methods have been studied, a robust and efficient 3DCP reinforcement solution is yet to be coined. To support these studies in finding a reinforcement solution fit for 3DCP, while limiting experimental efforts, we offer a computational fluid dynamics (CFD) model that simulate concrete flow around rebars. The numerical model applies 1) an elasto-visco-plastic constitutive law to mimic the flow behavior of the concrete and 2) the volume of fluid method to track the free surface of the concrete. To validate the proposed model, 3DCP experiments are carried out by printing around horizontal and vertical rebars. The rheological behavior of the concrete is characterized on a rheometer using a vane-in-cup measuring system, and such data is included in the CFD model. The experimental and numerical results agree relatively well; providing a new venue for identifying printing strategies that ensures a good bonding between concrete and reinforcement.
Integrating Reinforcement with 3D Concrete Printing: Experiments and Numerical Modelling
RILEM Bookseries
Buswell, Richard (editor) / Blanco, Ana (editor) / Cavalaro, Sergio (editor) / Kinnell, Peter (editor) / Spangenberg, Jon (author) / Leal da Silva, Wilson Ricardo (author) / Mollah, Md Tusher (author) / Comminal, Raphaël (author) / Juul Andersen, Thomas (author) / Stang, Henrik (author)
RILEM International Conference on Concrete and Digital Fabrication ; 2022 ; Loughborough, United Kingdom
Third RILEM International Conference on Concrete and Digital Fabrication ; Chapter: 56 ; 379-384
RILEM Bookseries ; 37
2022-06-25
6 pages
Article/Chapter (Book)
Electronic Resource
English
3D Printing Concrete with Reinforcement
| Springer Verlag | 2017
Strategies for integrating reinforcement into 3D concrete printing at the TU Dresden
| TIB AV-Portal | 2021
Numerical modelling of reinforced concrete walls with minimum vertical reinforcement
| Online Contents | 2017
Numerical modelling of bond between concrete and corroded reinforcement
| British Library Conference Proceedings | 2009