Mechanical Evaluation of 3D Printable Nano-Silica Incorporated Fiber-Reinforced Lightweight Foam-Concrete (2019-06)¶
, , Zeranka Stephan, ,
Contribution - Proceedings of the 10th International Conference on Fracture Mechanics of Concrete and Concrete Structures
Abstract
Lightweight foam concrete (LWFC) is becoming an interesting structural material. In its fresh state, LWFC is highly flowable. Modification of the rheology is required to include 3D construction printing as a production process for this class of materials. Nanoparticles have been shown to improve thixotropy of cement-based materials, characterized by a high static yield shear stress, but a distinctly lower dynamic yield shear stress. In this paper, 2% nano-silica (n-SiO2) by mass of cement content is added to LWFC, and the consequential improved 3D printability validated by actual 3D printing of laboratory specimens. A systematic experimental study is performed to characterize the mechanical strength and stiffness, as well as fracture energy of n-SiO2 LWFC, against control LWFC without n-SiO2. The n-SiO2 specimens are prepared by both casting and 3D printing, in order to also investigate the influence of the layered 3D printing process, including the cohesion of the interfaces between layers. The mechanical strength, stiffness and fracture energy of n-SiO2 LWFC are shown to be significantly higher than control LWFC specimens without nanoparticles.
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2 References
11 Citations
- Basith Mydeen Pitchai Mohamed Abdul (2025-12)
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A Critical Review - Sikora Paweł, Chung Sang-Yeop, Liard Maxime, Lootens Didier et al. (2021-02)
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Investigation on the Rheological Behavior of Lightweight Foamed Concrete for 3D Printing Applications
BibTeX
@inproceedings{cho_krug_zera_rooy.2019.MEo3PNSIFRLFC,
author = "Seung Cho and Jacques Pienaar Kruger and Stephan Zeranka and Algurnon Steve van Rooyen and Gideon Pieter Adriaan Greeff van Zijl",
title = "Mechanical Evaluation of 3D Printable Nano-Silica Incorporated Fiber-Reinforced Lightweight Foam-Concrete",
doi = "10.21012/fc10.232696",
year = "2019",
booktitle = "Proceedings of the 10th International Conference on Fracture Mechanics of Concrete and Concrete Structures",
editor = "International Association of Fracture Mechanics for Concrete and Concrete Structures",
}
Formatted Citation
S. Cho, J. P. Kruger, S. Zeranka, A. S. van Rooyen and G. P. A. G. van Zijl, “Mechanical Evaluation of 3D Printable Nano-Silica Incorporated Fiber-Reinforced Lightweight Foam-Concrete”, in Proceedings of the 10th International Conference on Fracture Mechanics of Concrete and Concrete Structures, 2019. doi: 10.21012/fc10.232696.
Cho, Seung, Jacques Pienaar Kruger, Stephan Zeranka, Algurnon Steve van Rooyen, and Gideon Pieter Adriaan Greeff van Zijl. “Mechanical Evaluation of 3D Printable Nano-Silica Incorporated Fiber-Reinforced Lightweight Foam-Concrete”. In Proceedings of the 10th International Conference on Fracture Mechanics of Concrete and Concrete Structures, edited by International Association of Fracture Mechanics for Concrete and Concrete Structures, 2019. https://doi.org/10.21012/fc10.232696.