Statistical Treatments of Chloride Threshold and Corrosion Propagation Rate
The variability found in real structures is a function of the “intrinsic” variability of the material itself, of its aging with time and of the external climatic conditions, and, therefore, it is normal that the chloride threshold and the corrosion rates could vary spatially in the same structure or...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Corrosion and Materials Degradation |
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| Online Access: | https://www.mdpi.com/2624-5558/3/4/32 |
| _version_ | 1797460839317372928 |
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| author | Carmen Andrade David Izquierdo |
| author_facet | Carmen Andrade David Izquierdo |
| author_sort | Carmen Andrade |
| collection | DOAJ |
| description | The variability found in real structures is a function of the “intrinsic” variability of the material itself, of its aging with time and of the external climatic conditions, and, therefore, it is normal that the chloride threshold and the corrosion rates could vary spatially in the same structure or temporarily as the concrete ages. In present communication, some statistical distributions of chloride threshold are discussed, as well as the variability of the corrosion rate in real exposure conditions. In all both cases, the values found in laboratory specimens are in the same range than those found in real structures. The chloride threshold can vary from 0.2% to around 3% by weight of cement depending on the corrosion potential, which, in turn, depends on the particular condition of the steel bar in each structure. The corrosion rates show to be below 0.1 µA/cm<sup>2</sup> when the steel is passive and values above 1 µA/cm<sup>2</sup> are seldom found in real structures. The high variability when considering all choices may impact in a prediction of residual life of several decades of difference which aims into the need for the assessment of a specialized engineering judgement in function of the quality of the concrete and the exposure class. |
| first_indexed | 2024-03-09T17:10:47Z |
| format | Article |
| id | doaj.art-e56a7a8577774e569ef0b0736d8012b2 |
| institution | Directory Open Access Journal |
| issn | 2624-5558 |
| language | English |
| last_indexed | 2024-03-09T17:10:47Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Corrosion and Materials Degradation |
| spelling | doaj.art-e56a7a8577774e569ef0b0736d8012b22023-11-24T14:05:50ZengMDPI AGCorrosion and Materials Degradation2624-55582022-10-013459861110.3390/cmd3040032Statistical Treatments of Chloride Threshold and Corrosion Propagation RateCarmen Andrade0David Izquierdo1CIMNE—International Center for Numerical Methods in Engineering, 28010 Madrid, SpainFaculty of Civil Engineering, UPM—Polytechnical University of Madrid, 28040 Madrid, SpainThe variability found in real structures is a function of the “intrinsic” variability of the material itself, of its aging with time and of the external climatic conditions, and, therefore, it is normal that the chloride threshold and the corrosion rates could vary spatially in the same structure or temporarily as the concrete ages. In present communication, some statistical distributions of chloride threshold are discussed, as well as the variability of the corrosion rate in real exposure conditions. In all both cases, the values found in laboratory specimens are in the same range than those found in real structures. The chloride threshold can vary from 0.2% to around 3% by weight of cement depending on the corrosion potential, which, in turn, depends on the particular condition of the steel bar in each structure. The corrosion rates show to be below 0.1 µA/cm<sup>2</sup> when the steel is passive and values above 1 µA/cm<sup>2</sup> are seldom found in real structures. The high variability when considering all choices may impact in a prediction of residual life of several decades of difference which aims into the need for the assessment of a specialized engineering judgement in function of the quality of the concrete and the exposure class.https://www.mdpi.com/2624-5558/3/4/32statisticalchloride-thresholdcorrosion-rate |
| spellingShingle | Carmen Andrade David Izquierdo Statistical Treatments of Chloride Threshold and Corrosion Propagation Rate Corrosion and Materials Degradation statistical chloride-threshold corrosion-rate |
| title | Statistical Treatments of Chloride Threshold and Corrosion Propagation Rate |
| title_full | Statistical Treatments of Chloride Threshold and Corrosion Propagation Rate |
| title_fullStr | Statistical Treatments of Chloride Threshold and Corrosion Propagation Rate |
| title_full_unstemmed | Statistical Treatments of Chloride Threshold and Corrosion Propagation Rate |
| title_short | Statistical Treatments of Chloride Threshold and Corrosion Propagation Rate |
| title_sort | statistical treatments of chloride threshold and corrosion propagation rate |
| topic | statistical chloride-threshold corrosion-rate |
| url | https://www.mdpi.com/2624-5558/3/4/32 |
| work_keys_str_mv | AT carmenandrade statisticaltreatmentsofchloridethresholdandcorrosionpropagationrate AT davidizquierdo statisticaltreatmentsofchloridethresholdandcorrosionpropagationrate |