Robayo-Salazar, R. A., Mejía de Gutiérrez, R., Puertas, F. (2016). Effect of metakaolin on natural volcanic pozzolan-based geopolymer cement. Applied Clay Science, 132-133, 491-497.
Robayo-Salazar, R. A., Mejía de Gutiérrez, R., Puertas, F. (2016). Effect of metakaolin on natural volcanic pozzolan-based geopolymer cement. Applied Clay Science, 132-133, 491-497.