Soto Cruz, Francisco JavierRosales García, JuliaBolívar Raya, Juan PedroRamos Lerate, InmaculadaAgrela Sainz, FranciscoGázquez González, Manuel Jesús2026-01-142026-01-142025Soto-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.2025.1079132590-1230 (electrónico)https://hdl.handle.net/10272/27684This 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.engAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/Phosphogypsum leachate treatmentCement mortarsLeaching testTechnical propertiesHeavy metals immobilisationjournal article10.1016/j.rineng.2025.107913open access3312 Tecnología de Materiales