Inhibition effect of potassium dichromate on the corrosion protection of mild steel reinforcement in concrete

International Journal of Physical Sciences

C. A. Loto¹ 

关键词: Corrosion;    passive/active corrosion;    inhibitors;    sulphuric acid;    sodium chloride media.;   

DOI  :  10.5897/IJPS11.411

学科分类：物理（综合）

来源: Academic Journals

【 摘 要 】

The inhibition of potassium dichromate on the corrosion protection of mild steel embedded in concrete and partially immersed in sulphuric acid and sodium chloride environments was evaluated at ambient temperatures. The experiments were performed using electrochemical potential monitoring method. Varying quantities of the inhibitor was used. In the NaCl test medium, the effectiveness of the inhibitor improved as higher concentration was used. The best inhibition was achieved in the reinforced concrete sample admixed with 9 g potassium dichromate. Steel-reinforced concrete sample admixed with 3 and 9 g potassium dichromate inhibitor had the highest improvement in compressive strength. The potassium dichromate inhibitor was most effective amongst other inhibitor concentrations used when 7.5 g was admixed with the sample in the H2SO4medium. The sulphuric acid medium had a deleterious effect on the strength of concrete test specimens.

【 授权许可】

CC BY