Efecto de la adición de lodos rojos como inhibidores de la corrosión de acero embebido en mortero

B. Díaz; L. Freire; P. Merino; X. R. Nóvoa; M. C. Pérez

doi:10.3989/revmetalm.2008.v44.i3.113

Authors

B. Díaz Universidade de Vigo, ETSEI
L. Freire Universidade de Vigo, ETSEI
P. Merino Universidade de Vigo, ETSEI
X. R. Nóvoa Universidade de Vigo, ETSEI
M. C. Pérez Universidade de Vigo, ETSEI

DOI:

https://doi.org/10.3989/revmetalm.2008.v44.i3.113

Keywords:

Corrosion, Rebars, Inhibitor, Red mud, Electrochemical techniques

Abstract

The red mud (RM) is the main residue of the Bayer Process, in which alumina is extracted from bauxite. Due to huge amount produced worldwide (84.1x109 kg/year) and their high alkaline character, RM represents an important environmental problem in areas where the industry is implanted. RM particles in alkaline solutions are ionised with hydroxyl groups that can anchorage to a metallic surface. This feature suggests the possibility of using RM as an inhibitor for steel in alkaline medium. So a possible solution for these residues, as additive in reinforcing concrete, is presented in this study. The experimental results prove samples with RM do not present corrosion in spite of the high amount of chloride ions.

Downloads

Download data is not yet available.

References

[1] X. R. Nóvoa, C. Pérez, J. J. Pérez y M. C. Pérez, V Congreso Nacional de Corrosión y Protección, Madrid, 2000.

[2] B. Díaz, S. Joiret, M. Keddam, X. R. Nóvoa y M. C. Pérez, H. Takenouti, Electrochim. Acta, 49 (2004) 3039-3048. doi:10.1016/j.electacta.2004.01.063

[3] A. Collazo, M. J. Cristóbal, X. R. Nóvoa, G. Pena y M. C: Pérez, J.ASTM Int. 3 (2006) 1-10. doi:10.1520/JAI11785

[4] C. Andrade, L. Soler, C. Alonso, X. R. Nóvoa y M. Keddam, Corros. Sci. 38 (1996) 133-145. doi:10.1016/0010-938X(96)00115-1

[5] C. Andrade, M. Keddam, X. R. Nóvoa, M. C. Pérez, C. Rangel y H. Takenouti, Electrochim. Acta 46 (2001) 3.905-3.912.

[6] C. Andrade, P. Merino, X. R. Nóvoa, M. C. Pérez y L. Soler, Mater. Sci. Forum 192- 194 (1995) 891-898.

[7] V. Feliu, J. A. González, C. Andrade, S. Feliu, Corros. Sci. 40 (1998) 975-993. doi:10.1016/S0010-938X(98)00036-5

[8] H.F.W. Taylor, Cement Chemistry, 2nd ed., Thomas Telford Ed., Londres, Inglaterra, 1998.

[9] M. Keddam, H. Takenouti, X. R. Nóvoa, C. Andrade y C. Alonso, Cem. Concr. Res. 27 (1997) 1.191-1.201.

[10] C. Andrade, F. Bolzoni, M. Cabeza, X.R. Nóvoa y M.C. Pérez, Electrochemical Approach to Selected Corrosion and Corrosion Control Studies European Federation of Corrosion Pub., Nº 28, P.L. Bonora y F. Deflorian. Ed., The Institute of Materials, Londres, Inglaterra, pp. 332-343.

[11] E. Otero, Corrosión y degradación de materiales, Ed. Síntesis, Madrid, 1997, p. 71.

[12] Astm Standard C876-91, ASTM Standards, Vol 03.02, 1998.

[13] S. Joiret, M. Keddam, X. R. Nóvoa, M. C. Pérez, C. Rangel y H. Takenouti, Cem. Concr. Compos. 24 (2002) 7-15. doi:10.1016/S0958-9465(01)00022-1

[14] B. E. Conway, Electrochemical supercapacitors, Kluwer Academy, Plenum Pub., 1999.

[15] S. Joiret, M. Keddam, H. Perrot, H. Takenouti, X.R. Nóvoa, M.C. Pérez, Proc. 8th Int. Simp. Passivity of metals and semiconductors, The Electrochem. Soc. Proc. Vol. 99-42, Pennington, NJ, USA, 1999, pp. 799-804.

[16] C. Alonso, C. Andrade, M. Izquierdo, X. R. Nóvoa y M. C. Pérez. Corros. Sci. 40 (1998) 1.379-1.389.

[17] P . Pedeferri, Construc. Build. Mater. 10 (1996) 391-402. doi:10.1016/0950-0618(95)00017-8

[18] D. Izquierdo, C. Alonso, C. Andrade y M. Castellote, Electrochim. Acta 49 (2004) 2.731-2.739.