RT Journal Article
T1 Phosphogypsum leachate cleaning waste as partial cement replacement in mortars
A1 Soto Cruz, Francisco Javier
A1 Rosales García, Julia
A1 Bolívar Raya, Juan Pedro
A1 Ramos Lerate, Inmaculada
A1 Agrela Sainz, Francisco
A1 Gázquez González, Manuel Jesús
AB This study presents the first valorisation of a waste generated from the cleaning process of phosphogypsum leachate. Leachate decontamination waste (LDW), which contains non-negligible concentrations of heavy metals, radionuclides and fluorine, was used as a partial cement replacement in mortars at varying proportions. New cements and mortars were produced from mixtures of a commercial Portland cement (CEM I 52.5) with different concentrations of this waste (2.5, 5, 7.5, 10, 25 and 35 wt.%). The physical-chemical properties, mechanical behaviour, and environmental impact of these LDW-cement mortars were evaluated. The results revealed that incorporating LDW at levels of up to 10% not only maintained but even enhanced the mechanical properties compared to the reference mortar. Furthermore, the cement matrix effectively immobilized potential contaminants in all cases, contributing to environmental safety.
PB Elsevier
SN 2590-1230 (electrónico)
YR 2025
FD 2025
LK https://hdl.handle.net/10272/27684
UL https://hdl.handle.net/10272/27684
LA eng
NO Soto-Cruz, F. J., Rosales, J., Bolívar, J. P., Ramos-Lerate, I., Agrela, F., & Gázquez, M. J. (2025). Phosphogypsum leachate cleaning waste as partial cement replacement in mortars. Results in Engineering, 28, 107913. https://doi.org/10.1016/j.rineng.2025.107913
NO This research was funded by the following projects: Operative FEDER Program-Andalucía 2014-2020 (EPIT1432023, UHU-202020); Grants PID2020–116461RB-C21 and 116461RA-C22) funded by MICIU/AEI/ 10.13039/501100011033; Research grant UCA/REC44VPCT/2021, by the University of Cádiz; Andalusian government (I+D+i-JAPAIDI-Retos project PY20_00096); Grant TED2021–130361B-I00 funded by MICIU/ AEI /10.13039/501100011033 and, by “European Union NextGener ationEU/ PRTR”, and Campus de Excelencia Internacional del Mar (CEIMAR) (research project CEIJ-C07.2). The "Plan Propio UCA 2025- 2027″ has also supported this work.
DS Repositorio Institucional de la Universidad de Huelva
RD 13 jun 2026