Using Calcium Oxide and Accelerator to Control the Initial Setting-Time of Mortar in 3D Concrete Printing (2020-12)¶

10.1007/978-981-16-7924-7_56

Antoni Antoni, Widjaya David, Wibowo Alexander, Chandra Jimmy, Pudjisuryadi Pamuda, Hardjito Djwantoro
Contribution - Proceedings of the 5^th International Conference on Sustainable Civil Engineering Structures and Construction Materials, pp. 871-880

Abstract

In recent years, 3D printing has attracted a lot of attention in the construction industry. Compared with general concrete construction, 3D concrete printing has higher flexibility in creating concrete’s shape and design. 3D concrete printing requires the precise control of fresh concrete properties such as flowability, extrudability, and resistance to segregation during printing process. The initial setting time of the concrete also needs to be controlled as it needs to adhere to the next layer and then harden rapidly in order to support the upper layer. This study proposes a method to control the initial setting time of the concrete for the 3D printing process by using a mixture of calcium oxide powder and accelerators. The study showed that using 5–10% calcium oxide and 2–4% accelerator by mass of cement, the initial setting of the concrete can be varied. It is also shown that adding only accelerator prolongs the setting time of the mixture due to the plasticizer contained therein. By using calcium oxide power, the initial setting time of the concrete can be hastened and the combination of calcium oxide powder and accelerator can reduce the initial setting time while maintaining good workability of the mixture. The addition of accelerator also increases the early compressive strength of the concrete mixture.

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32 References

4 Citations

BibTeX

@inproceedings{anto_widj_wibo_chan.2022.UCOaAtCtISToMi3CP,
  author            = "Antoni Antoni and David Christian Widjaya and Alexander Ricardo Koentjoro Wibowo and Jimmy Chandra and Pamuda Pudjisuryadi and Djwantoro Hardjito",
  title             = "Using Calcium Oxide and Accelerator to Control the Initial Setting-Time of Mortar in 3D Concrete Printing",
  doi               = "10.1007/978-981-16-7924-7_56",
  year              = "2022",
  volume            = "215",
  pages             = "871--880",
  booktitle         = "Proceedings of the 5th International Conference on Sustainable Civil Engineering Structures and Construction Materials",
  editor            = "Sheila Belayutham and Che Khairil Izam Che Ibrahim and Anizahyati Alisibramulisi and Hazrina Mansor and Muntasir Billah",
}

Formatted Citation

IEEE

A. Antoni, D. C. Widjaya, A. R. K. Wibowo, J. Chandra, P. Pudjisuryadi and D. Hardjito, “Using Calcium Oxide and Accelerator to Control the Initial Setting-Time of Mortar in 3D Concrete Printing”, in Proceedings of the 5^th International Conference on Sustainable Civil Engineering Structures and Construction Materials, 2022, vol. 215, pp. 871–880. doi: 10.1007/978-981-16-7924-7_56.

CMOS

Antoni, Antoni, David Christian Widjaya, Alexander Ricardo Koentjoro Wibowo, Jimmy Chandra, Pamuda Pudjisuryadi, and Djwantoro Hardjito. “Using Calcium Oxide and Accelerator to Control the Initial Setting-Time of Mortar in 3D Concrete Printing”. In Proceedings of the 5^th International Conference on Sustainable Civil Engineering Structures and Construction Materials, edited by Sheila Belayutham, Che Khairil Izam Che Ibrahim, Anizahyati Alisibramulisi, Hazrina Mansor, and Muntasir Billah, 215:871–80, 2022. https://doi.org/10.1007/978-981-16-7924-7_56.