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Cathodic Protection of Steel Reinforcement in Concrete | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 26, Issue 3, 2008, Pages 131-142 PDF (244.51 K) | ||
| DOI: 10.30684/etj.26.3.15 | ||
| Authors | ||
| واثق عيسى مهدي; عبد الوهاب حسن خضر; احمد حسن خضر | ||
| Abstract | ||
| The present research has be investigated the relation between the induced level of polarization and the area of the embedded steel, area of the anode, the concrete resistance and the level of applied external voltage. During exposure period, the specimens were polarized using three different levels of external voltages (750, 1000, 1500) mV. Various electrochemical and electrical measurements were made, these include half cell potential, degree of polarization, flowing current and the actually applied voltage as compared with the external one. The results indicate differential moisture content in each specimen has produced different potentials along the steel bars. Greater polarization has always been associated with the submerged portion of the specimen where the concrete resistance is at its minimum. whereas the degree of polarization is directly proportional to the level of external voltage. The results also illustrate that, for a given level of externally applied voltage, the degree of polarization is dependent on the area of protected steel and the area of the anode. Thus the polarization increases with the decrease in the protected steel area and the increase of the area of the anode. | ||
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