Abstract
Performance of cathodic protection system in reinforced concrete structures is generally evaluated using 100 mV decay cri-terion. This approach is widely used, however has its own limitations. Recently, a new approach by determining the actual corrosion rate using the Butler Volmer equation has become an ‘alternative’ criterion for assessing the performance of cathodic protection system. This paper deals with critical examination and practical application of Butler-Volmer Equation to judge the effectiveness of cathodic protection system. Sensitivity analysis of various input parameters through numerical modelling by parametric studies showed significant dependence of corrosion rate on cathodic Tafel slope. One-year field data from a cathodic protection monitoring site in UK was collected and variability in the two approaches was assessed.
| Original language | English |
|---|---|
| Article number | 14 |
| Number of pages | 9 |
| Journal | Journal of Building Pathology and Rehabilitation |
| Volume | 6 |
| Issue number | 1 |
| Early online date | 8 Apr 2021 |
| DOIs | |
| Publication status | Published - Dec 2021 |
Bibliographical note
The final publication is available at Springer via http://dx.doi.org/10.1007/s41024-021-00108-3Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.
Keywords
- Butler-Volmer equation
- Cathodic Protection
- Corrosion rate
- Numerical Modelling
- Protection Criteria
- Reinforced Concrete
ASJC Scopus subject areas
- Building and Construction
- Civil and Structural Engineering