Widyariset
Vol 2, No 1 (2016): Widyariset

COMPARATIVE STUDY OF CORROSION INHIBITORS FOR REBAR STEELS IN SIMULATED PORE SOLUTION CONTAINING SEAWATER AND CARBONATES

Arini Nikitasari (Pusat Penelitian Metalurgi dan Material, LIPI)
Faty Alvina (Teknik Metalurgi, Universitas Sultan Ageng Tirtayasa)
Efendi Mabruri (Pusat Penelitian Metalurgi dan Material, LIPI)



Article Info

Publish Date
31 May 2016

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.

Copyrights © 2016






Journal Info

Abbrev

widyariset

Publisher

Subject

Engineering

Description

Widyariset is a scientific journal which publishes the results of research and development, assessment and systematic thinking about science and technology. The writers of the scientific papers in this journal come from researchers/researcher candidates from various institutions' research and ...