PSI - Issue 17

S. Tsouli et al. / Procedia Structural Integrity 17 (2019) 268–275 S. Tsouli, A.G. Lekatou, C. Nikolaidis, S. Kleftakis/ Structural Integrity Procedia 00 (2019) 000 – 000

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4. Conclusions Cyclic potentiodynamic polarization of 316L stainless steel rebars in a slightly alkaline electrolyte containing Ca(OH) 2 , fly ash (FA, 0-25% of the dry mixture) and an acid rain simulating solution revealed very low corrosion current densities, true passivity and non-susceptibility to localized corrosion (10-20 wt.% FA). The corrosion resistance increased with FA increasing (up to 20 wt.%). However, this trend was reversed at 25 wt.% FA content due to agglomeration of FA particles. Partial replacement of cement with FA did not affect the tensile properties of concrete embedded 316L and 304L rebars before or after 2 m of salt spraying, besides a slight decrease in elongation after 2 m (0 and 25 wt.% FA). 316L and 304L embedded rebars performed similarly on tensile testing after salt spraying, a promising conclusion towards the possibility of replacement of 304L by 316L in restoration works. References Aperador, W., Vera, R., Carvajal, A.M., 2012. 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