1. M. Mustafa, A. Bakri, H. Mohammed, H. Kamarudin, I.K. Niza, and Y. Zarina, Review on fly ash-based geopolymer concrete without Portland Cement, J. Eng. Technol. Res., 3(2011), No. 1, p. 1.
2. M.A. Villaquirán-caicedo, R.M. de Gutiérrez, S. Sulekar, C. Davis, and J.C. Nino, Thermal properties of novel binary geopolymers based on metakaolin and alternative silica sources, Appl. Clay Sci., 118(2015), p. 276.
3. J. Davidovits, Properties of geopolymer cements, [in] First International Conference on Alkaline Cements and Concretes, Kiev, 1994, p. 131.
4. H.T. Huynh, New generation geopolymers, [in] 2nd French Seminar on Geopolymers, Clermont-Ferrand, 2013.
5. Y.M. Liew, C.Y. Heah, A.B. Mohd Mustafa, and H. Kamarudin, Structure and properties of clay-based geopolymer cements: A review, Prog. Mater. Sci., 83(2016), p. 595.