RT Journal Article
T1 Phosphogypsum as additive 1 for foamed bitumen 2 manufacturing used in asphalt paving
A1 Cuadri Vega, Antonio Abad
A1 Pérez Moreno, Silvia María
A1 Altamar, C.L.
A1 Navarro Domínguez, Francisco Javier
A1 Bolívar Raya, Juan Pedro
AB The aim of this work was to use phosphogypsum (FY) waste in a sustainable paving practice involving the production of FY-foamed bitumen for road applications. For this proposal, three FY types coming from different fertilizer industries and a reference natural gypsum were used as foaming agents (10 wt%), including a small quantity of sulfuric acid (0.5 wt%) in the foamed bitumen formulation. The foaming properties and the rheological characterization of their corresponding binder residues were conducted by a distance laser sensor and by dynamic shear rheology, respectively. In addition, a physicochemical characterization of the used materials was carried out in order to evaluate their role in the final product. Knowing that FY is a Naturally Occurring Radioactive Material (NORM) waste, a comprehensive radioactive characterization, by both alpha and gamma spectrometry, and an environmental evaluation, by a Dynamic Surface Leaching Test (DSLT), were performed to comply with the EU radiological regulation of NORM materials for building materials. In conclusion, FY-foamed bitumen displayed enhanced engineering properties compared to that prepared with the reference natural gypsum, satisfying the radioactive and environmental specifications established according to the EU regulations.
PB Elsevier
SN 0959-6526
YR 2021
FD 2021-02
LK http://hdl.handle.net/10272/19614
UL http://hdl.handle.net/10272/19614
LA eng
NO Cuadri Vega, A. A., Pérez Moreno, S., Altamar, C. L., Navarro  Domínguez, F. J. & Bolívar Raya, J. P. (2021). Phosphogypsum as additive for foamed bitumen manufacturing used in asphalt paving. Journal of Cleaner Production, 283, 124661. DOI: https://doi.org/10.1016/j.jclepro.2020.124661
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026