Abstract
This paper reports the fresh and hardened properties of an ambient temperature cured 3D printable geopolymer suitable for extrusion-based 3D concrete printing process. Effects of several key geopolymer synthesis parameters including type of alkaline activator (sodium (Na)-based versus potassium (K)-based), mass ratio of silicate to hydroxide solutions, viscosity and SiO2/M2O ratio (where M = Na or K) of silicate solution on extrudability, open time, shape retention ability and compressive strength of the 3D printable geopolymers were investigated. The results revealed that the type of alkaline activator solution and SiO2/Na2O ratio of the silicate solution had a significant influence on the open time and shape retention ability of the mixtures. The parameters investigated in this study did not have significant effect on the extrudability of the mixtures. The Na-based activators resulted in higher compressive strength of 3D printed geopolymer than the K-based activators. The 3D printable geopolymer mixture made by 8.0 M NaOH solution (25% w/w) and Na2SiO3 solution (75% w/w) with a SiO2/Na2O ratio = 2.0 exhibited the highest compressive strength of 16.6 MPa when cured for only 3 days in the ambient temperature.
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References
Gao, W., Zhang, Y., Ramanujan, D., Ramani, K., Chen, Y., Williams, C.B., Wang, C.C., Shin, Y.C., Zhang, S., Zavattieri, P.D.: The status, challenges, and future of additive manufacturing in engineering. Comput. Aided Des. 69, 65–89 (2015)
Nematollahi, B., Xia, M., Sanjayan, J.: Current progress of 3D concrete printing technologies. In: 34th International Symposium on Automation and Robotics in Construction (ISARC 2017), Taiwan, pp. 260–267 (2017)
Nematollahi, B., Sanjayan, J., Shaikh, F.U.A.: Synthesis of heat and ambient cured one-part geopolymer mixes with different grades of sodium silicate. Ceram. Int. 41, 5696–5704 (2015)
Xia, M., Nematollahi, B., Sanjayan, J.: Printability, accuracy and strength of fly ash/slag geopolymer made using powder-based 3D printing for construction applications. Autom. Constr.
Xia, M., Nematollahi, B., Sanjayan, J.: Influence of binder saturation level on compressive strength and dimensional accuracy of powder-based 3D printed geopolymer. In: Proceedings of the 2nd International Conference on Advanced Manufacturing and Materials (ICAMM 2018), Tokyo (2018)
Panda, B., Paul, S.C., Hui, L.J., Tay, Y.W.D., Tan, M.J.: Additive manufacturing of geopolymer for sustainable built environment. J. Clean. Prod. 167, 281–288 (2017)
Nematollahi, B., Xia, M., Sanjayan, J.: Effect of type of fiber on inter-layer bond and flexural strengths of extrusion-based 3D printed geopolymer. In: Proceedings of the 2nd International Conference on Advanced Manufacturing and Materials (ICAMM), Tokyo (2018)
Paul, S.C., Tay, Y.W.D., Panda, B., Tan, M.J.: Fresh and hardened properties of 3D printable cementitious materials for building and construction. Arch. Civ. Mech. Eng. 18, 311–319 (2018)
Le, T.T., Austin, S.A., Lim, S., Buswell, R.A., Gibb, A.G., Thorpe, T.: Mix design and fresh properties for high-performance printing concrete. Mater. Struct. 45, 1221–1232 (2012)
Xu, H., Van Deventer, J., Lukey, G.: Effect of alkali metals on the preferential geopolymerization of stilbite/kaolinite mixtures. Ind. Eng. Chem. Res. 1(40), 3749–3756 (2001)
Panias, D., Giannopoulou, I.P., Perraki, T.: Effect of synthesis parameters on the mechanical properties of fly ash-based geopolymers. Colloids Surf. A Physicochem. Eng. Asp. 301, 246–254 (2007)
Nadoushan, M.J., Ramezanianpour, A.A.: The effect of type and concentration of activators on flowability and compressive strength of natural pozzolan and slag-based geopolymers. Constr. Build. Mater. 111, 337–347 (2016)
Palomo, A., Grutzeck, M., Blanco, M.: Alkali-activated fly ashes: a cement for the future. Cem. Concr. Res. 29, 1323–1329 (1999)
Komljenović, M., Baščarević, Z., Bradić, V.: Mechanical and microstructural properties of alkali-activated fly ash geopolymers. J. Hazard. Mater. 181, 35–42 (2010)
Law, D.W., Adam, A.A., Molyneaux, T.K., Patnaikuni, I., Wardhono, A.: Long term durability properties of class F fly ash geopolymer concrete. Mater. Struct. 48, 721–731 (2015)
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Bong, S.H., Nematollahi, B., Nazari, A., Xia, M., Sanjayan, J.G. (2019). Fresh and Hardened Properties of 3D Printable Geopolymer Cured in Ambient Temperature. In: Wangler, T., Flatt, R. (eds) First RILEM International Conference on Concrete and Digital Fabrication – Digital Concrete 2018. DC 2018. RILEM Bookseries, vol 19. Springer, Cham. https://doi.org/10.1007/978-3-319-99519-9_1
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DOI: https://doi.org/10.1007/978-3-319-99519-9_1
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