Compressive Strength and Morphology of Fly Ash Based Geopolymer as Artificial Aggregate with Different Curing Temperature

Abstract:

This paper presented the compressive strength of geopolymer paste with different NaOH concentration and morphology analysis for sintered artificial aggregate. This artificial aggregate was produce based on mix design with highest compressive strength which is 12 M. The sample was cured at 70 °C for 24 hours and then it was exposed to different temperature at range 500 °C to 700 °C. Scanning Electron Microscopy (SEM) has been used to identify the formation of microstructure. The geopolymer artificial aggregate was an alternative ways to produce a greener environmental. In this study, the compressive strength for different Na₂SiO₃/NaOH ratio has been analyzed. The morphology for best mix design then were analyze for different curing temperature. The result shows fly ash based geopolymer paste with 12 M of NaOH concentration shows excellent result with 7.30 MPa at 2.5 ratio of Na₂SiO₃/NaOH and for geopolymer artificial aggregate, when temperature of heat treatment increased, the open porosity of porous geopolymer surface decreased.

• Periodical: Key Engineering Materials (Volumes 594-595)
• Pages: 151-155
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.594-595.151
• Online since: December 2013
• Authors: Alida Abdullah, A.M. Mustafa Al Bakri, Hussin Kamarudin, C.M. Ruzaidi, Yahya Zarina, Mohd Arif Anuar Mohd Salleh, Nurhamidah Zakaria, Md Tahir Muhammad Faheem
• Keywords: Artificial Aggregate, Compressive Strength, Fly Ash (FA), Geopolymer, Morpholoy, Sintering

References

[1] Omar A. Abdulkareem, A. M. Mustafa Al Bakri, H. Kamarudin, I. Khairul Nizar, (2012) A study on the synthesis of fly ash-based geopolymer  lightweight aggregate concrete, Advance materials letters, (In press).

DOI: 10.4028/www.scientific.net/amr.626.781

[2] Mustafa Al Bakri, A. M., H. Kamarudin, I. Khairul Nizar, M. Bnhussain, Y. Zarina and A. R. Rafiza, (2012).

DOI: 10.4028/www.scientific.net/amr.626.918

[3] Mustafa Al Bakri A. M., Omar. A. K, San Myint, (2009) Study on the Effect Of Alkaline Activators Ratio In Preparation Of Fly Ash - Based Geopolymer, proceeding of RAMM & ASMP.

[4] Hardjito, D., Wallah, S. E. and Rangan, B. V. (2002), Study on Engineering Properties of Fly Ash Based Geopolymer Concrete, Journal of the Australisian Ceramic Society, 38(1), pp.44-47.

[5] Wallah, S. E., Hardjito, D., Sumajouw, D. M. J., and Rangan, B. V., (2004), Creep behavior of Fly ash-based Geopolymer Concrete, In: Seventh CANMET/ACI International Conference on Recent Advances in Concrete Technology, pp.49-60.

DOI: 10.14359/13308

[6] Mustafa Al Bakri A. M. Kamarudin, H., Mohamed, B., Khairul Nizar, I., Zarina, Y. Rafiza, A. R., (2012), Fly Ash-based Geopolymer Lightweight Concrete Using Foaming Agent, Int. J. Mol. Sci. 13(6), 7186-7198.

DOI: 10.4028/www.scientific.net/kem.594-595.8

[7] Mehta, P. K., (2002), Greening of the concrete industry for sustainable development, Concrete International, 24(7), pp.23-28.

[8] Malhotra, V. M., (1999), Making Concrete Greener, with Fly Ash, Concrete International, 21(5), pp.61-66.

[9] Yudthana Leelatha Wornsuk. (2009). The Role Sodium Hydroxide Concentration in Fly-Ash based Geopolymer. vol. 1, pp.16-17.

[10] Sathish Kumar, V, Blessen Skariah Thomas, Alex Christopher. (2012). The Properties of Glass Fibre Reinforced Geopolymer Concrete. vol. 2, pp.722-726.

[11] Kong, L. Y, Daniel and Sanjayan, Jay, G. (2008). Damage Behavior of Geopolymer Composites Exposed to Elevated Temperatures. vol. 30, pp.986-991.

DOI: 10.1016/j.cemconcomp.2008.08.001

[12] Vijaya Rangan, B. (2006). Fly Ash Based Geopolymer Concrete. vol. 1, pp.1-17.

[13] Mustafa Al Bakri A. M., Kamaruddin, H., Omar A. K., Norazian, N., Ruzaidi, C. M, Rafiza, A. R., (2011).

[14] Mustafa Al Bakri A. M. , Liyana, J., Kamarudin, H, . Mohamed B., Ruzaidi, C. M., Izzat, A., (2012).

[15] Muzek, M. N., Zelic, J., and Jozic, D. (2012), Microstructural Characteristics of Geopolymer Based on Alkaline- Activated fly ash, Chem. Biochem. Eng. Q., 26(2) pp.89-95.

[16] Komljenović M, Bascarević Z, and Bradić V. (2010), Mechanical and microstructural properties of alkali-activated fly ash geopolymers, Journal Hazard Materials, 181(1-3): 35-42.

DOI: 10.1016/j.jhazmat.2010.04.064

[17] Acar, I. and Atalay, M. U., (2013), Characterization of sintered class F fly ashes, Fuel, 106, pp.195-203.

DOI: 10.1016/j.fuel.2012.10.057