A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Stabilization of Phosphogypsum by Sulfur Polymer
In this research, a new type of phosphogypsum–sulfur polymer cement (PG-SPC) for use in the manufacture of building materials was obtained. Physicochemical, radiological characterization, and modeling of exhalation rates were carried out in phosphogypsum (PG) and PG-SPC samples. Because the PG is enriched in several natural radionucleides, a leaching study in PG-SPC was performed. The optimized ratio of elemental and phosphogypsum dosage = 10–40% by weight was obtained. The result showed that the solidified materials present a highest strength (54–62 MPa) and low total porosity (2.8–6.8%). The activity concentration index () in the PG-SPC is lower than the reference values in most international regulations; therefore these new sulfur polymer cements can be used without radiological restrictions in the manufacture of building materials inside a standard room () with good ventilation. The leaching experiment demonstrated that the environmental impacts of the PG-SPC cements are negligible.
Stabilization of Phosphogypsum by Sulfur Polymer
In this research, a new type of phosphogypsum–sulfur polymer cement (PG-SPC) for use in the manufacture of building materials was obtained. Physicochemical, radiological characterization, and modeling of exhalation rates were carried out in phosphogypsum (PG) and PG-SPC samples. Because the PG is enriched in several natural radionucleides, a leaching study in PG-SPC was performed. The optimized ratio of elemental and phosphogypsum dosage = 10–40% by weight was obtained. The result showed that the solidified materials present a highest strength (54–62 MPa) and low total porosity (2.8–6.8%). The activity concentration index () in the PG-SPC is lower than the reference values in most international regulations; therefore these new sulfur polymer cements can be used without radiological restrictions in the manufacture of building materials inside a standard room () with good ventilation. The leaching experiment demonstrated that the environmental impacts of the PG-SPC cements are negligible.
Stabilization of Phosphogypsum by Sulfur Polymer
García-Díaz, Irene (author) / López-Coto, Israel (author) / Bolívar, Juan Pedro (author) / Alguacil, Francisco José (author) / Gázquez, Manuel (author) / López, Félix Antonio (author)
Journal of Materials in Civil Engineering ; 25 ; 1041-1049
2012-08-28
92013-01-01 pages
Article (Journal)
Electronic Resource
English
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