Muñoz , M.A., Rincón , D.A., Robayo Salazar , R. and Mejía de Gutiérrez , R. 2023. Development of 3d printing mixes based on portland cement and additions of metakaolin, microsilica, and calcium carbonate. Ingeniería y Competitividad. 25, Suplemento (Sep. 2023), e–20113116. DOI:https://doi.org/10.25100/iyc.v25i4.13116.