Contreras Llanes, ManuelGázquez González, Manuel JesúsGarcía Díaz, IreneAlguacil, Francisco J.López, Félix A.Bolívar Raya, Juan Pedro2016-01-202016-01-202013Contreras Llanes, M., Gázquez González, M.J., García Díaz, I., Alguacil, F., López, F.A., Bolívar Raya, J.P.: "Valorisation of waste ilmenite mud in the manufacture of sulphur polymer cement". Journal of Environmental Management. Vo. 128, págs. 625–630, (2013). DOI: 10.1016/j.jenvman.2013.06.0150301-47971095-8630 (electrónico)http://hdl.handle.net/10272/11590This paper reports the preparation of sulphur polymer cements (SPCs) incorporating waste ilmenite mud for use in concrete construction works. The ilmenite mud raw material and the mud-containing SPCs (IMC-SPCs) were characterised physico-chemically and radiologically. The optimal IMC-SPC mixture had a sulphur/mud ratio (w/w) of 1.05 (mud dose 20 wt%); this cement showed the greatest compressive strength (64 MPa) and the lowest water absorption coefficient (0.4 g cm−2 at 28 days). Since ilmenite mud is enriched in natural radionuclides, such as radium isotopes (2.0·103 Bq kg−1228Ra and 5.0·102 Bq kg−1226Ra), the IMC-SPCs were subjected to leaching experiments, which showed their environmental impact to be negligible. The activity concentration indices for the different radionuclides in the IMC-SPCs containing 10% and 20% ilmenite mud met the demands of international standards for materials used in the construction of non-residential buildings.engAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/Naturally occurring radioactive materials (NORM)Titanium dioxide industryIlmenite mudSulphur polymer cementsjournal article10.1016/j.jenvman.2013.06.015open access