RT Journal Article
T1 Characterization and Analysis of the Carbonation Process of a Lime Mortar Obtained from Phosphogypsum Waste
A1 Romero Hermida, M. I.
A1 Borrero López, Antonio María
A1 Flores Alés, V.
A1 Alejandre, Francisco Javier
A1 Franco Gómez, José María
A1 Santos, Alberto
A1 Esquivias, Luis
AB This work addresses the reuse of waste products as a raw material for lime putties, whichare one of the components of mortar. 1:3 Lime/sand mortars very similar to conventional constructionmortars were prepared using a lime putty obtained from the treatment of phosphogypsum withsodium hydroxide. The physical, rheological and mechanical properties of this phosphogypsumderived mortar have been studied, as well as the mineralogical composition, microstructure byscanning electron microscope (SEM) and curing process by monitoring carbonation and ultrasonicpropagation velocity. Considering the negative influence of sulphates on the hardened material, thebehaviour of the material after sulphates precipitation by adding barium sulphate was additionallytested. Carbonation progressed from the outside to the inside of the specimen through the poroussystem by Liesegang rings patterns for mortars with soluble sulphates, while the carbonation withprecipitated sulphates was controlled by diffusion-precipitation. Overall, the negative influence oflow-sulphate contents on the mechanical properties of mortars was verified. It must be highlightedthe importance of their precipitation to obtain adequate performance
PB MDPI
SN 1660-4601 (electrónico)
YR 2021
FD 2021
LK http://hdl.handle.net/10272/20049
UL http://hdl.handle.net/10272/20049
LA eng
NO Romero-Hermida, M. I., Borrero-López, A. M., Flores-Alés, V., Alejandre, F. J., Franco, J. M., Santos, A., & Esquivias, L. (2021). Characterization and Analysis of the Carbonation Process of a Lime Mortar Obtained from Phosphogypsum Waste. International Journal of Environmental Research and Public Health, 18(12), 6664. https://doi.org/10.3390/ijerph18126664
NO The authors wish to express their gratitude to the CITIUS-University of Sevillefor the use of their laboratories. The authors also thank FERTIBERIA for supplying the phosphogypsum. A.M.B.-L. has received a Ph.D. Research Grant from the Ministerio de Educación, Cultura yDeporte (FPU16/03697)
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026