Roa Bohórquez, K.L. et al. 2018. Application of MgSO4 • 7H2O and Fly Ash as a Reinforcement in the Matrix of Solid Ceramic Units. Revista Ingenierías Universidad de Medellín. 17, 32 (Jul. 2018), 35–49. DOI:https://doi.org/10.22395/rium.v17n32a2.