Characterizing Steel Corrosion in Different Alkali-Activated Mortars
| العنوان: | Characterizing Steel Corrosion in Different Alkali-Activated Mortars |
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| المؤلفون: | Tadeja Kosec, Miha Hren, Andraž Legat, Nina Gartner |
| المصدر: | Materials; Volume 14; Issue 23; Pages: 7366 Materials Materials, Vol 14, Iss 7366, p 7366 (2021) Materials, vol. 14, no. 23, pp. 1-14, 2021. |
| بيانات النشر: | Multidisciplinary Digital Publishing Institute, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | alkalijsko-aktivirane malte, Technology, Materials science, Article, law.invention, Corrosion, korozija, udc:620.1/.2, law, General Materials Science, rentgenska računalniška mikrotomografija, Composite material, Metakaolin, alkali-activated mortars, X-ray computed microtomography, vizualna analiza, Microscopy, QC120-168.85, corrosion, armaturno jeklo, QH201-278.5, Slag, visual analysis, Engineering (General). Civil engineering (General), elektrokemijska impedančna spektroskopija, electrochemical impedance spectroscopy, TK1-9971, Dielectric spectroscopy, Portland cement, Descriptive and experimental mechanics, Fly ash, visual_art, Service life, visual_art.visual_art_medium, steel reinforcement, Electrical engineering. Electronics. Nuclear engineering, TA1-2040, Mortar |
| الوصف: | Alkali-activated materials (AAMs) present a promising potential alternative to ordinary Portland cement (OPC). The service life of reinforced concrete structures depends greatly on the corrosion resistance of the steel used for reinforcement. Due to the wide range and diverse properties of AAMs, the corrosion processes of steel in these materials is still relatively unknown. Three different alkali-activated mortar mixes, based on fly ash, slag, or metakaolin, were prepared for this research. An ordinary carbon-steel reinforcing bar was installed in each of the mortar mixes. In order to study the corrosion properties of steel in the selected mortars, the specimens were exposed to a saline solution in wet/dry cycles for 17 weeks, and periodic electrochemical impedance spectroscopy (EIS) measurements were performed. The propagation of corrosion damage on the embedded steel bars was followed using X-ray computed microtomography (μXCT). Periodic EIS measurements of the AAMs showed different impedance response in individual AAMs. Moreover, these impedance responses also changed over the time of exposure. Interpretation of the results was based on visual and numerical analysis of the corrosion damages obtained by μXCT, which confirmed corrosion damage of varying type and extent on steel bars embedded in the tested AAMs. |
| وصف الملف: | application/pdf; text/url |
| اللغة: | English |
| تدمد: | 1996-1944 |
| DOI: | 10.3390/ma14237366 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7874adc9a6a753ea5df3ab743cb14fa |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....e7874adc9a6a753ea5df3ab743cb14fa |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19961944 |
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| DOI: | 10.3390/ma14237366 |