| Naslov: | Characterizing steel corrosion in different alkali-activated mortars |
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| Avtorji: | ID Gartner, Nina (Avtor)
ID Hren, Miha (Avtor)
ID Kosec, Tadeja (Avtor)
ID Legat, Andraž (Avtor) |
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| Datoteke: |  URL - Izvorni URL, za dostop obiščite https://www.mdpi.com/1996-1944/14/23/7366
 PDF - Predstavitvena datoteka, prenos (7,00 MB)
MD5: C32401C384EEE7CBC7ADCD6129559E27
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| Jezik: | Angleški jezik |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: |  ZAG - Zavod za gradbeništvo Slovenije
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| Povzetek: | 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 (XCT). 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 XCT, which confirmed corrosion damage of varying type and extent on steel bars embedded in the tested AAMs. |
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| Ključne besede: | corrosion, alkali-activated mortars, steel reinforcement, electrochemical impedance spectroscopy, X-ray computed microtomography, visual analysis |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Datum objave: | 30.11.2021 |
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| Založnik: | Molecular Diversity Preservation International |
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| Leto izida: | 2021 |
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| Št. strani: | str. 1-14 |
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| Številčenje: | Vol. 14, iss. 23 |
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| PID: | 20.500.12556/DiRROS-16102  |
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| UDK: | 620.1/.2 |
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| ISSN pri članku: | 1996-1944 |
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| DOI: | 10.3390/ma14237366 |
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| COBISS.SI-ID: | 88913923 |
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| Avtorske pravice: | © 2021 by the authors.
Licensee MDPI, Basel, Switzerland. |
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| Opomba: | Nasl. z nasl. zaslona;
Opis vira z dne 10. 12. 2021;
Št. članka 7366;
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| Datum objave v DiRROS: | 05.07.2023 |
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| Število ogledov: | 729 |
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| Število prenosov: | 365 |
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| Metapodatki: |    |
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