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Faty Alvina
Teknik Metalurgi, Universitas Sultan Ageng Tirtayasa
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COMPARATIVE STUDY OF CORROSION INHIBITORS FOR REBAR STEELS IN SIMULATED PORE SOLUTION CONTAINING SEAWATER AND CARBONATES Arini Nikitasari; Faty Alvina; Efendi Mabruri
Widyariset Vol 2, No 1 (2016): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (908.867 KB) | DOI: 10.14203/widyariset.2.1.2016.47-56

Abstract

The performances of sodium nitrite and dimethylethanolamine (DMEA) inhibitors have been compared in mitigating corrosion of rebar steels in simulated pore solution containing sea water and carbonates. The simulated solution was prepared by dissolving saturation amounts of alkali hydroxides and sulphates in sea water  and adding carbonates subsequently. The inhibitor of sodium nitrite and DMEA with various concentration was then added to the respective simulated solution. The corrugated rebar steels were immersed in the solutions and electrochemical corrosion was measured using potentiodynamic polarization method. The experimental results showed that sodium nitrite exhibited more effective performance compared to DMEA in mitigating rebar steel corrosion  in sea water and carbonated media. The lowest steel corrosion rate of 0.27 M Sodium nitrite with 0.3 M concentration decreased corrosion rate of the steel to 0.27 M, the lowest values of the measured corrosion rates this work.
COMPARATIVE STUDY OF CORROSION INHIBITORS FOR REBAR STEELS IN SIMULATED PORE SOLUTION CONTAINING SEAWATER AND CARBONATES Arini Nikitasari; Faty Alvina; Efendi Mabruri
Widyariset Vol 2, No 1 (2016): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/widyariset.2.1.2016.47-56

Abstract

The performances of sodium nitrite and dimethylethanolamine (DMEA) inhibitors have been compared in mitigating corrosion of rebar steels in simulated pore solution containing sea water and carbonates. The simulated solution was prepared by dissolving saturation amounts of alkali hydroxides and sulphates in sea water  and adding carbonates subsequently. The inhibitor of sodium nitrite and DMEA with various concentration was then added to the respective simulated solution. The corrugated rebar steels were immersed in the solutions and electrochemical corrosion was measured using potentiodynamic polarization method. The experimental results showed that sodium nitrite exhibited more effective performance compared to DMEA in mitigating rebar steel corrosion  in sea water and carbonated media. The lowest steel corrosion rate of 0.27 M Sodium nitrite with 0.3 M concentration decreased corrosion rate of the steel to 0.27 M, the lowest values of the measured corrosion rates this work.
Co-Authors Arini Nikitasari Efendi Mabruri