Thermogalvanic currents in steel reinforced concrete

Nóvoa, X. Ramón; Pérez, Carmen; Reyes Ferreira, Alberto; Soage Quintáns, Manuel Andrés; Vázquez, A.

Use this link to cite:

https://hdl.handle.net/2183/46361

Thermogalvanic currents in steel reinforced concrete

Files

SoageQuintans_Andres_2016_Thermogalvanic Currents in Steel Reinforced Concrete.pdf (1.71 MB)

Identifiers

URI: https://hdl.handle.net/2183/46361

DOI: 10.1016/j.electacta.2015.11.138

Publication date

2016

Authors

Nóvoa, X. Ramón

Pérez, Carmen

Reyes Ferreira, Alberto

Soage Quintáns, Manuel Andrés

Vázquez, A.

Bibliographic citation

Nóvoa, X. R., Pérez, C., Reyes, A., Soage, A., & Vázquez, A. (2016). Thermogalvanic currents in steel reinforced concrete. Electrochimica Acta, 202, 269–276. https://doi.org/10.1016/j.electacta.2015.11.138

Abstract

[Abstract]: The thermogalvanic currents between nominally identical segments in a reinforced concrete beam were investigated. Temperature gradients induce galvanic currents that exhibit a 30 0C critical point. The character of the hot electrode side changes from anodic to cathodic when the temperature rises above that pivot point. Parallel tests performed in solution using carbon steel-stainless steel galvanic couples also revealed that 30 0C is a critical temperature. In NaOH solution the carbon steel behaves cathodically with respect to stainless steel but only for T< 30 0C. In Ca(OH)2 solution containing chlorides the carbon steel consistently behaves anodically while the degree of thermogalvanic current exhibits a pronounced temperature dependence.