On the Chloride Distribution in Concrete and Mortar Samples after an RCM Test
It is of essential need to face the challenges of CO<sub>2</sub> reduction in industrial cement and concrete production reliable test methods in order to evaluate the performance of concretes, especially with regard to the service life of our infrastructure. The rapid chloride migration...
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| Format: | Article |
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MDPI AG
2023-04-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/8/2952 |
| _version_ | 1797604590011547648 |
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| author | Hannah Drenkard Christian Fischer Veit Sauer Christoph Gehlen |
| author_facet | Hannah Drenkard Christian Fischer Veit Sauer Christoph Gehlen |
| author_sort | Hannah Drenkard |
| collection | DOAJ |
| description | It is of essential need to face the challenges of CO<sub>2</sub> reduction in industrial cement and concrete production reliable test methods in order to evaluate the performance of concretes, especially with regard to the service life of our infrastructure. The rapid chloride migration test (RCM test) is a standard method to assess the resistance against chloride ingress of concrete. However, during our study, certain critical questions arose with regard to the chloride distribution. The sharp chloride ingress front based on the model assumptions contradicted the shallow gradient of the experimental data. For this reason, investigations on chloride distribution in concrete and mortar samples after RCM tests were performed. The focus was on the factors influencing the extraction, e.g., time after RCM test and the location on sample. Furthermore, differences between concrete and mortar samples were investigated. The investigations showed that no sharp gradient on concrete samples was found due to the extremely uneven chloride front. In contrast, the theoretical profile shape was instead demonstrated on mortar specimens. The prerequisite for this result is that the drill powder must be taken directly after the completion of the RCM test from very uniform penetration areas. Thus, the model assumptions on the chloride distribution via the RCM test could be confirmed. |
| first_indexed | 2024-03-11T04:48:25Z |
| format | Article |
| id | doaj.art-34c39f6d12a0458d9392a9a4eb3b95a2 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T04:48:25Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-34c39f6d12a0458d9392a9a4eb3b95a22023-11-17T20:10:56ZengMDPI AGMaterials1996-19442023-04-01168295210.3390/ma16082952On the Chloride Distribution in Concrete and Mortar Samples after an RCM TestHannah Drenkard0Christian Fischer1Veit Sauer2Christoph Gehlen3Faculty of Architecture and Civil Engineering, Technical University of Applied Sciences Würzburg-Schweinfurt, Röntgenring 8, 97070 Würzburg, GermanyFaculty of Architecture and Civil Engineering, Technical University of Applied Sciences Würzburg-Schweinfurt, Röntgenring 8, 97070 Würzburg, GermanyF.A. Finger-Institute for Building Materials Science, Faculty of Civil Engineering, Bauhaus-University Weimar, Coudraystr. 11, 99423 Weimar, GermanyCentre for Building Materials, Department of Materials Engineering, TUM School of Engineering and Design, Technical University of Munich, Franz-Langinger-Straße 10, 81245 München, GermanyIt is of essential need to face the challenges of CO<sub>2</sub> reduction in industrial cement and concrete production reliable test methods in order to evaluate the performance of concretes, especially with regard to the service life of our infrastructure. The rapid chloride migration test (RCM test) is a standard method to assess the resistance against chloride ingress of concrete. However, during our study, certain critical questions arose with regard to the chloride distribution. The sharp chloride ingress front based on the model assumptions contradicted the shallow gradient of the experimental data. For this reason, investigations on chloride distribution in concrete and mortar samples after RCM tests were performed. The focus was on the factors influencing the extraction, e.g., time after RCM test and the location on sample. Furthermore, differences between concrete and mortar samples were investigated. The investigations showed that no sharp gradient on concrete samples was found due to the extremely uneven chloride front. In contrast, the theoretical profile shape was instead demonstrated on mortar specimens. The prerequisite for this result is that the drill powder must be taken directly after the completion of the RCM test from very uniform penetration areas. Thus, the model assumptions on the chloride distribution via the RCM test could be confirmed.https://www.mdpi.com/1996-1944/16/8/2952chloride profileRCM testdrill powderconcretemortarchloride migration coefficient |
| spellingShingle | Hannah Drenkard Christian Fischer Veit Sauer Christoph Gehlen On the Chloride Distribution in Concrete and Mortar Samples after an RCM Test Materials chloride profile RCM test drill powder concrete mortar chloride migration coefficient |
| title | On the Chloride Distribution in Concrete and Mortar Samples after an RCM Test |
| title_full | On the Chloride Distribution in Concrete and Mortar Samples after an RCM Test |
| title_fullStr | On the Chloride Distribution in Concrete and Mortar Samples after an RCM Test |
| title_full_unstemmed | On the Chloride Distribution in Concrete and Mortar Samples after an RCM Test |
| title_short | On the Chloride Distribution in Concrete and Mortar Samples after an RCM Test |
| title_sort | on the chloride distribution in concrete and mortar samples after an rcm test |
| topic | chloride profile RCM test drill powder concrete mortar chloride migration coefficient |
| url | https://www.mdpi.com/1996-1944/16/8/2952 |
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