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Abdulkareem M.A. Al-Sammarraie
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Medicine & Pharmacology

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Investigation on the Effect of Origin of Carbon Steel Reinforcing Bar on the Corrosion Behavior in Artificial Concrete Solution Abdulkareem M.A. Al-Sammarraie
Journal of Global Pharma Technology Volume 11 Issue 05.
Publisher : Journal of Global Pharma Technology

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Abstract

The corrosion of steel reinforcing bar in concrete is very important point in fractures and damage of concrete building structures, many factors play important role in this problem. This research focuses on the effect of the origin of the carbon steel reinforcing bar on the corrosion parameters in simulate concrete solution (artificial), consisted of (Ca (OH) 2 (2gm), KOH (22.44mg), Noah (8mg). Two familiar types in the Iraqi local markets were followed, namely; locally produced sample and Ukrainian imported samples. Tafel plots and cyclic polarization procedures were conducted to estimate the corrosion parameters and pitting susceptibly of the two types using three electrodes potentiostat.The effect of temperature and some thermodynamic functions were measured in the range 20 to 50ᴼC. The microstructure and morphology was imaged using optical and atomic force microscope (AFM) respectively.Keywords: Steel reinforcing, Concrete solution, Artificial, Tafel.
Role of Chloride on Corrosion of Carbon Steel Reinforcing Bar in Simulate Concrete Electrolyte Abdulkareem M.A. Al-Sammarraie
Journal of Global Pharma Technology Volume 11 Issue 05.
Publisher : Journal of Global Pharma Technology

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Abstract

It is well known that chloride ion plays an important role in the destruction of various kinds of concrete structures such as bridges of buildings and reservoirs because of the corrosion of carbon steel reinforcement bar, causing huge human and material damages. In this study, the effect of saline conditions on carbon steel reinforcement was investigated artificial concrete solution in a range of sodium chloride concentrations from 0.5 to 4.5% and at temperatures of 20°C to 50°C. Three electrodes potentiostat was used to measure the corrosion rate and the probability of pitting corrosion through Tafel and cyclic polarization plots respectively. The measurements were supported using other techniques; atomic force microscopy and optical light microscopy. The results showed an increase in corrosion rates of the carbon steel reinforcing bar at all chloride ion concentrations, and increased with increasing the concentration and the temperature, all chloride concentrations showed susceptibility to pitting corrosion and highly depend on NaCl continents.Keyword: Reinforcing bar, Pitting, Artificial concrete solution.
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