Fresh and Hardened Properties of 3D Printable Foam Concrete Containing Porous Aggregates
Paper
Paper/Presentation Title | Fresh and Hardened Properties of 3D Printable Foam Concrete Containing Porous Aggregates |
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Presentation Type | Paper |
Authors | Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay |
Journal or Proceedings Title | Proceedings of the 3rd RILEM International Conference on Concrete and Digital Fabrication |
Journal Citation | 37, pp. 65-70 |
Number of Pages | 6 |
Year | 2022 |
Publisher | Springer |
ISBN | 9783031061189 |
9783031061158 | |
9783031061165 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/978-3-031-06116-5_10 |
Web Address (URL) of Paper | https://link.springer.com/chapter/10.1007/978-3-031-06116-5_10 |
Web Address (URL) of Conference Proceedings | https://link.springer.com/book/10.1007/978-3-031-06116-5 |
Conference/Event | 3rd RILEM International Conference on Concrete and Digital Fabrication |
Event Details | 3rd RILEM International Conference on Concrete and Digital Fabrication Delivery In person Event Date 27 to end of 29 Jun 2022 Event Location Loughborough, United Kingdom |
Abstract | The foam concrete or aerated concrete is most widely used for construction applications where, lightweight, thermal insulation and fire resistance are crucial. While the application of foam concrete is successful in the construction industry, the emerging technology of concrete 3D printing possesses many challenges when using foam concrete. This is primarily due to the high flowability of foam concrete, since it contains a large proportion of air bubbles, resulting in poor shape retention and buildability characteristics. This study investigates the utilization of lightweight aggregate to reduce the foam content to achieve a lightweight 3D printable mix. The expanded perlite (EP) aggregate was used as a volumetric replacement to fine sand that substantially reduced the foam content in the mix. The effect of EP on the physical and mechanical properties was studied and compared with the control 3D printable foam concrete containing sand. The results showed that the replacement of sand with EP aggregate reduces the flow properties that is suitable for 3D printing. Besides, the compressive strength of 3D printed samples was also enhanced with the addition of EP aggregates. The compressive strength of EP based 3D printed specimens at 28 days was determined as 12.95 MPa, 15.5 MPa and 10.6 MPa in the perpendicular, longitudinal, and lateral directions respectively. On the other hand, control 3D printed samples displayed the compressive strength of 5.5 MPa, 8.4 MPa and 4.2 MPa at a slightly lower density range. |
Keywords | Lightweight concrete ; 3D printing; Porous aggregat; Flow; Strength properties |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 400505. Construction materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Swinburne University of Technology |
https://research.usq.edu.au/item/zy636/fresh-and-hardened-properties-of-3d-printable-foam-concrete-containing-porous-aggregates
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