A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Valorisation of phosphogypsum as building material: radiological aspects ; Valorización de fosfoyeso como material de construcción: aspectos radiológicos
Nowadays, alternative uses of phosphogypsum (PG) in the building industry are being considered in several countries; however, the natural radioactivity level in the PG could be a restriction for those uses. United States Environmental Protection Agency (US-EPA) classified PG as Technologically Enhanced Naturally Occurring Radioactive Material (TENORM). This drawback could be avoided controlling its percentage in the cement preparation and the radionuclides content in the other raw materials used in its production, and calculating the activity concentration index (I) in the final by-products. The valorization of PG as a building material has been studied, from a radiological point of view, by developing a new stabilisation/solidification process. PG is incorporated within a polymeric sulphur matrix, obtaining a concretelike material, which presents lower natural radioactive content than the initial PG. The 226Ra content of this material ranged between 26-27 Bq·kg-1 and it is quite similar to that of common Spanish building materials. ; The authors are grateful to the Spanish National R&D&I Plan (Project CTQ2008-02012/PPQ) for the financial support of this study. We also thank M. Sánchez Sánchez from Technology Department of CIEMAT for his help in the uranium analysis. Finally, Hanan Tayibi is grateful to CSIC for an I3P contract (I3PDR-6-01). ; Peer reviewed
Valorisation of phosphogypsum as building material: radiological aspects ; Valorización de fosfoyeso como material de construcción: aspectos radiológicos
Nowadays, alternative uses of phosphogypsum (PG) in the building industry are being considered in several countries; however, the natural radioactivity level in the PG could be a restriction for those uses. United States Environmental Protection Agency (US-EPA) classified PG as Technologically Enhanced Naturally Occurring Radioactive Material (TENORM). This drawback could be avoided controlling its percentage in the cement preparation and the radionuclides content in the other raw materials used in its production, and calculating the activity concentration index (I) in the final by-products. The valorization of PG as a building material has been studied, from a radiological point of view, by developing a new stabilisation/solidification process. PG is incorporated within a polymeric sulphur matrix, obtaining a concretelike material, which presents lower natural radioactive content than the initial PG. The 226Ra content of this material ranged between 26-27 Bq·kg-1 and it is quite similar to that of common Spanish building materials. ; The authors are grateful to the Spanish National R&D&I Plan (Project CTQ2008-02012/PPQ) for the financial support of this study. We also thank M. Sánchez Sánchez from Technology Department of CIEMAT for his help in the uranium analysis. Finally, Hanan Tayibi is grateful to CSIC for an I3P contract (I3PDR-6-01). ; Peer reviewed
Valorisation of phosphogypsum as building material: radiological aspects ; Valorización de fosfoyeso como material de construcción: aspectos radiológicos
Tayibi, Hanan (author) / Gascó, Catalina (author) / Navarro, Nuria (author) / López-Delgado, Aurora (author) / Alvarez, A. (author) / Alguacil, Francisco José (author) / López Gómez, Félix Antonio (author)
2011-01-01
doi:10.3989/mc.2010.58910
Article (Journal)
Electronic Resource
English
DDC:
690
Advantages and disadvantages of using phosphogypsum as building material. Radiological aspects
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