A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mechanical Characterization of Layer-by-Layer Interface in Concrete Elements Obtained by Additive Manufacturing
The anisotropic behavior of the 3D concrete printing elements represents a crucial key feature to be closely investigated. It is mainly due to the layered extrusion process, the most widespread digital concrete technology, which creates weak planes at the interface, known as “Cold Joints”, by placing material layer upon layer. To investigate the interface bond failure mechanism, the bond strength at the interface between layers was measured in this study, especially with respect to printing time gap between layers. In particular, this work provides a characterization of the mechanical properties of 3D printed concrete elements’ interfaces through the design and the implementation of an experimental setup supported by DIC technique, in order to study the shear behavior of layer interfaces. The study investigates different 3d concrete elements produced with 100 s, 200 s, 1800 s as time gap between layer deposition, showing a significant decrease in terms of maximum load up to about 50% for the elements realized with the higher value of resting time compared to bulk elements.
Mechanical Characterization of Layer-by-Layer Interface in Concrete Elements Obtained by Additive Manufacturing
The anisotropic behavior of the 3D concrete printing elements represents a crucial key feature to be closely investigated. It is mainly due to the layered extrusion process, the most widespread digital concrete technology, which creates weak planes at the interface, known as “Cold Joints”, by placing material layer upon layer. To investigate the interface bond failure mechanism, the bond strength at the interface between layers was measured in this study, especially with respect to printing time gap between layers. In particular, this work provides a characterization of the mechanical properties of 3D printed concrete elements’ interfaces through the design and the implementation of an experimental setup supported by DIC technique, in order to study the shear behavior of layer interfaces. The study investigates different 3d concrete elements produced with 100 s, 200 s, 1800 s as time gap between layer deposition, showing a significant decrease in terms of maximum load up to about 50% for the elements realized with the higher value of resting time compared to bulk elements.
Mechanical Characterization of Layer-by-Layer Interface in Concrete Elements Obtained by Additive Manufacturing
RILEM Bookseries
Bos, Freek P. (editor) / Lucas, Sandra S. (editor) / Wolfs, Rob J.M. (editor) / Salet, Theo A.M. (editor) / Napolitano, Rosanna (author) / Menna, Costantino (author) / Asprone, Domenico (author) / Del Giudice, Lorenzo (author)
RILEM International Conference on Concrete and Digital Fabrication ; 2020 ; Eindhoven, The Netherlands
Second RILEM International Conference on Concrete and Digital Fabrication ; Chapter: 48 ; 468-477
RILEM Bookseries ; 28
2020-07-08
10 pages
Article/Chapter (Book)
Electronic Resource
English
Layer Interface Behaviour in Layered Concrete Structural Elements
| Springer Verlag | 2023
ADDITIVE MANUFACTURING OF CONCRETE CONSTRUCTION ELEMENTS
| European Patent Office | 2024
| British Library Online Contents | 2011