Corrosion Resistance of Steel Rebar in Simulated Concrete Pore Solution in Presence of Trisodium Phosphate and Zn2+

Authors

  • S. Devi Meenakshi Department of Chemistry & Physics, Nadar Saraswathi College of Arts & Science, Theni, Tamil Nadu, India
  • Susai Rajendran Research Centre, St. Antony’s College of Arts & Science, Thamaraipadi, Dindigul, Tamil Nadu, India
  • G. Divya Department of Chemistry & Physics, Nadar Saraswathi College of Arts & Science, Theni, Tamil Nadu, India
  • S. Anusuya Department of Chemistry & Physics, Nadar Saraswathi College of Arts & Science, Theni, Tamil Nadu, India

DOI:

https://doi.org/10.51983/tarce-2016.5.2.2230

Keywords:

Rebar Steel, Corrosion Inhibition, Trisodium Phosphate, Well Water, Synergistic Effect, Simulated Concrete Pore Solution

Abstract

The inhibitive performance of Trisodium Phosphate (TSP) in controlling corrosion of rebar steel immersed in simulated concrete pore solution prepared in well water in the absence and presence of Zn2+ has been evaluated by the weight loss method. The formulation consisting of 250 ppm of TSP and 50 ppm of Zn2+ offers 95 % inhibition efficiency to rebar steel. Potentiodynamic polarization and electrochemical impedance studies confirmed that a TSP -Zn2+ system function as an anodic inhibitor and the formulation controls the anodic reaction predominantly. Surface analysis by CV, SEM and AFM confirmed the formation of protective layer on the rebar steel surface.

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Published

05-11-2016

How to Cite

Devi Meenakshi, S., Rajendran, S., Divya, G., & Anusuya, S. (2016). Corrosion Resistance of Steel Rebar in Simulated Concrete Pore Solution in Presence of Trisodium Phosphate and Zn2+. The Asian Review of Civil Engineering, 5(2), 13–18. https://doi.org/10.51983/tarce-2016.5.2.2230