| Title: | Characterization of steel corrosion processes in various blended cements by means of coupled multi-electrode arrays |
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| Authors: | ID Hren, Miha (Author)
ID Kosec, Tadeja (Author)
ID Legat, Andraž (Author) |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0008884623000467
 PDF - Presentation file, download (12,61 MB)
MD5: 81CEA30390EF2183C8EA6EF7D71813BA
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  ZAG - Slovenian National Building and Civil Engineering Institute
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| Abstract: | Supplementary cementitious materials can affect the porosity of concrete, pore solution pH and chloride binding, all of which influence the type and magnitude of corrosion damage. Advanced corrosion monitoring techniques are needed to follow the development of corrosion on steel embedded in concrete across space and over time. In this study, coupled multi-electrode arrays (CMEAs) were used to characterise corrosion processes in OPC and three blended cements. Cyclic wetting with chlorides was undertaken to initiate corrosion. The results showed three distinct types of corrosion: localised corrosion (CEM I), localised corrosion that expanded over time (CEM II), and a combination of localised and general corrosion (CEM III and CEM IV). Cathodic locations were also monitored successfully, and the corrosion behaviour was related to total porosity and pH of the pore solution. MicroCT was used to quantify the volume of corroded material, which agreed well with results calculated from the CMEA measurements. |
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| Keywords: | blended cements, coupled multi-electrode array, corrosion of steel in concrete, supplementary cementitious materials, open access |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 06.03.2023 |
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| Publisher: | Pergamon Press |
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| Year of publishing: | 2023 |
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| Number of pages: | str. 1-12 |
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| Numbering: | Vol. 168, [article no.] 107134 |
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| PID: | 20.500.12556/DiRROS-16401  |
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| UDC: | 620.1/.2 |
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| ISSN on article: | 0008-8846 |
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| DOI: | 10.1016/j.cemconres.2023.107134 |
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| COBISS.SI-ID: | 144372483 |
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| Copyright: | © 2023 The Author(s). Published by Elsevier Ltd |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 7. 3. 2023;
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| Publication date in DiRROS: | 29.05.2023 |
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| Views: | 668 |
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| Downloads: | 378 |
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