Details
| Original language | English |
|---|---|
| Title of host publication | RILEM Bookseries |
| Editors | Prof. Richard Buswell, Dr. Ana Blanco, Prof. Sergio Cavalaro, Dr. Peter Kinnell |
| Publisher | Springer Science and Business Media B.V. |
| Pages | 255-260 |
| Number of pages | 6 |
| ISBN (electronic) | 978-3-031-06116-5 |
| ISBN (print) | 978-3-031-06115-8 |
| Publication status | Published - 2022 |
Publication series
| Name | RILEM Bookseries |
|---|---|
| Volume | 37 |
| ISSN (Print) | 2211-0844 |
| ISSN (electronic) | 2211-0852 |
Abstract
The layer-by-layer nature of additive manufacturing processes creates an interface between the individual strands and can therefore affect the printed element in the hardened state. In this paper, the Shotcrete 3D Printing (SC3DP) technique is investigated. Here, the effect of process and material parameters during production, namely concrete volume flow (0.4; 0.6; 0.8 m3/h), air volume flow (30; 40; 50 m3/h), and accelerator dosage (corresponding with 0; 3; 6% bwoc) on layer geometry (width/height), interface tortuosity and flexural strength are evaluated. The results presented in this paper show that the strand geometry is essentially determined by the accelerator dosage and concrete volume flow. The interface tortuosity is influenced by an interaction of all three parameters, but the air volume flow has the greatest influence. The flexural strength is dominated by the accelerator dosage and the air volume flow. In addition, a correlation between interface tortuosity and flexural strength is demonstrated. Finally, the consequences of how to use the findings of the effect of process parameters, accelerator dosage, and the layer-by-layer nature during printing in practical application are discussed.
Keywords
- 3D concrete printing, Accelerator, Additive manufacturing in construction, Density, Flexural strength, Interface tortuosity, Process parameters, SC3DP
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
- Engineering(all)
- Mechanics of Materials
Cite this
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RILEM Bookseries. ed. / Prof. Richard Buswell; Dr. Ana Blanco; Prof. Sergio Cavalaro; Dr. Peter Kinnell. Springer Science and Business Media B.V., 2022. p. 255-260 (RILEM Bookseries; Vol. 37).
Research output: Chapter in book/report/conference proceeding › Contribution to book/anthology › Research › peer review
}
TY - CHAP
T1 - Influence of Material and Process Parameters on Hardened State Properties of Shotcrete 3D-Printed Elements
AU - Böhler, David
AU - Mai, Inka
AU - Freund, Niklas
AU - Lachmayer, Lukas
AU - Raatz, Annika
AU - Lowke, Dirk
N1 - Funding Information: Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Founda-tion) – TRR 277/1 2020 – Project number 414265976. The authors thank the DFG for the support within the CRC/ Transregio 277-Additive Manufacturing Construction. (Projects A04 and B04).
PY - 2022
Y1 - 2022
N2 - The layer-by-layer nature of additive manufacturing processes creates an interface between the individual strands and can therefore affect the printed element in the hardened state. In this paper, the Shotcrete 3D Printing (SC3DP) technique is investigated. Here, the effect of process and material parameters during production, namely concrete volume flow (0.4; 0.6; 0.8 m3/h), air volume flow (30; 40; 50 m3/h), and accelerator dosage (corresponding with 0; 3; 6% bwoc) on layer geometry (width/height), interface tortuosity and flexural strength are evaluated. The results presented in this paper show that the strand geometry is essentially determined by the accelerator dosage and concrete volume flow. The interface tortuosity is influenced by an interaction of all three parameters, but the air volume flow has the greatest influence. The flexural strength is dominated by the accelerator dosage and the air volume flow. In addition, a correlation between interface tortuosity and flexural strength is demonstrated. Finally, the consequences of how to use the findings of the effect of process parameters, accelerator dosage, and the layer-by-layer nature during printing in practical application are discussed.
AB - The layer-by-layer nature of additive manufacturing processes creates an interface between the individual strands and can therefore affect the printed element in the hardened state. In this paper, the Shotcrete 3D Printing (SC3DP) technique is investigated. Here, the effect of process and material parameters during production, namely concrete volume flow (0.4; 0.6; 0.8 m3/h), air volume flow (30; 40; 50 m3/h), and accelerator dosage (corresponding with 0; 3; 6% bwoc) on layer geometry (width/height), interface tortuosity and flexural strength are evaluated. The results presented in this paper show that the strand geometry is essentially determined by the accelerator dosage and concrete volume flow. The interface tortuosity is influenced by an interaction of all three parameters, but the air volume flow has the greatest influence. The flexural strength is dominated by the accelerator dosage and the air volume flow. In addition, a correlation between interface tortuosity and flexural strength is demonstrated. Finally, the consequences of how to use the findings of the effect of process parameters, accelerator dosage, and the layer-by-layer nature during printing in practical application are discussed.
KW - 3D concrete printing
KW - Accelerator
KW - Additive manufacturing in construction
KW - Density
KW - Flexural strength
KW - Interface tortuosity
KW - Process parameters
KW - SC3DP
UR - http://www.scopus.com/inward/record.url?scp=85133184414&partnerID=8YFLogxK
U2 - 10.1007/978-3-031-06116-5_38
DO - 10.1007/978-3-031-06116-5_38
M3 - Contribution to book/anthology
AN - SCOPUS:85133184414
SN - 978-3-031-06115-8
T3 - RILEM Bookseries
SP - 255
EP - 260
BT - RILEM Bookseries
A2 - Buswell, Prof. Richard
A2 - Blanco, Dr. Ana
A2 - Cavalaro, Prof. Sergio
A2 - Kinnell, Dr. Peter
PB - Springer Science and Business Media B.V.
ER -