IJNCSE - SPECIAL ISSUE - ICCER 2015

INTERNATIONAL JOURNAL OF NANO CORROSION SCIENCE ENGINEERING

SPECIAL ISSUE

ICCER 2015

ISSN :2395 – 7018


Research Article

TITLE :

CORROSION RESISTANCE OF GALVANIZED IRON IMMERSED IN SIMULATEDCONCRETE PORE SOLUTION PREPARED IN WELL WATER IN THE PRESENCE OF NEEM

AUTHORS

A.Pothumponnu[a]*, S.Suganya[a], S.Lokesh[a], P.Maria Chella Pandi[a] , S.Rajendran[b] and S.S.Syed Abuthahir[b]

[a]Department of Civil Engineering , RVS School of Engineering and Technology,
Dindigul624005, India. Email:pothumponnu311@gmail.com, sonubnpc94@gmail.com,
er.lokesh3270@gmail.com, marmal3163@gmail.com
[b] Corrosion Research Centre, Department of Chemistry , RVS School of Engineering
and Technology, Dindigul- 624005, India. Email : susairajendran@gmail.com,
syedchem05@gmail.com

ABSTRACT


Concrete is used in construction of buildings .Simulated concrete pore solution (SCPS) is equivalent to concrete admixtures. The corrosion resistance of galvanized iron immersed in simulated concrete pore solution prepared in well water, in the absence and presence of an aqueous extract of neem leaves. Corrosion resistance has been evaluated by weight loss method. The mechanistic aspects of corrosion inhibition have been studied by electro chemical study such AC impedence spectra . It is observed that when neem extract is added to SCPS, the corrosion resistance increases. As the concentration of neem extract increases corrosion resistance also increases . This is confirmed by electro chemical study.When corrosion resistance increases, charge transfer value (Rt) increases, impedence value ( log(Z/Ω)) increases, and double layer capacitance (Cdl) decreases. The present study leads to the conclusion that addition of neem extract to concrete admixtures will increase the corrosion resistance of galvanized iron which can be used as re bars. Neem extract has anti bacterial activity. Hence addition of neem extract will reduce the microbial corrosion of rebars.


Key words: Simulated concrete pore solution, Concrete corrosion, Galvanized iron, Neem extract, Green inhibitor

PDF DOWNLOAD

ARTICLE VIEWS DOWNLOADS
web counter