Tawfik, A., Abd El-Raoof, F., Katsuki, H., MacKenzie, K. J. and Komarneni, S. (2016) “K-Based Geopolymer from metakaolin: roles of K/Al ratio and water or steam Curing at different temperatures”, Materiales de Construcción, 66(322), p. e081. doi: 10.3989/mc.2016.03115.