1. Global cement production from 1990 to 2013 (in million metric tons), ©Statista 2018.
2. McCaffrey, R. (2002). Climate change and the cement industry. Global Cement and Lime Magazine (Environmental Special Issue), 15–19.
3. Davidovits, J. (1988). Soft mineralogy and geopolymers. In Proceedings of the of Geopolymer 88 International Conference. Compiègne, France: Université de Technologie.
4. Moon, H. Y. (2003). Seung-Tae Lee, and Seong-Soo Kim, Sulphate resistance of silica fume blended mortars exposed to various sulphate solutions. Canadian Journal of Civil Engineering, 30, 625–636.
5. Okoye, F. N., Durgaprasad, J., & Singh, N. B. (2016). Effect of silica fume on the mechanical properties of fly ash based-geopolymer concrete. Ceramics International.
http://dx.doi.org/10.1016/j.ceramint.2015.10.084
.