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Naslov:Electrochemical corrosion tests on steel in alkali-activated materials
Avtorji:ID Gartner, Nina (Avtor)
ID Hren, Miha (Avtor)
ID Kosec, Tadeja (Avtor)
ID Legat, Andraž (Avtor)
Datoteke:.pdf PDF - Predstavitvena datoteka, prenos (9,29 MB)
MD5: 9894BB38311A12D91AA0F5BC762F8F04
Opis: Odprti dostop
 
.pdf PDF - Predstavitvena datoteka, prenos (2,16 MB)
MD5: 1FC0C1D19D520C292FCCB4518045C174
 
URL URL - Izvorni URL, za dostop obiščite https://www.zag.si/dl/coms2020-21-proceedings-2.pdf
 
Jezik:Angleški jezik
Tipologija:1.08 - Objavljeni znanstveni prispevek na konferenci
Organizacija:Logo ZAG - Zavod za gradbeništvo Slovenije
Povzetek:One of the potential alternatives to Ordinary Portland Cement (OPC) are Alkali-Activated Materials (AAMs). The service life of reinforced concrete structures greatly depends on the corrosion resistance of embedded steel reinforcement. Due to the wide range of AAMs and their diverse properties, corrosion processes of steel in these materials are relatively unknown. Corrosion monitoring methods or their interpretations in certain cases cannot be directly transferred from the ones for OPC materials. The chemical compositions of pore solution in different AAMs influence the results of electrochemical measurements and their interpretations. Within this research, three different alkali-activated mortar mixes were prepared, based on fly ash, slag or metakaolin. Pore solutions were extracted from each mortar andchemical analysis was acquired. Different electrochemical corrosion measurements were performed on steel submerged to synthetic pore solutions. In parallel, ordinary carbon steel reinforcing bar was installed in the same types of alkali-activated mortar mixes. Specimens were exposed to wet/dry cycles with saline solution and periodic measurements of electrochemical impedance spectroscopy (EIS) were performed. Measured parameters in both systems were analysedand compared. It was concluded that electrochemical measurements in pore solutions can provide basic overview on corrosion behaviour in different AAMs environments. Periodic EIS measurements enabled monitoring of corrosion initiation and propagation on steel reinforcement in AAMs, although the information on the corrosion type is missing. Interpretation of results depends on visual analysis of corrosion damages after the end of exposure, providing information on corrosion type and intensity. The continuation of research on corrosion monitoring techniques will be performed by using Electrical Resistance (ER) sensors and Coupled Multi-Electrode Array (CMEA) sensors.
Ključne besede:corrosion, alkali-activated mortars, pore solution extraction, electrochemical corrosion techniques, visual analysis
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.01.2021
Založnik:Slovenian National Building and Civil Engineering Institute (ZAG)
Leto izida:2021
Št. strani:Str. 40-47
PID:20.500.12556/DiRROS-17934 Novo okno
UDK:624
COBISS.SI-ID:64661507 Novo okno
Avtorske pravice:© 2021 Slovenian National Building and Civil Engineering Institute
Opomba:Nasl. z nasl. zaslona; Opis vira z dne 26. 5. 2021;
Datum objave v DiRROS:22.01.2024
Število ogledov:630
Število prenosov:374
Metapodatki:XML DC-XML DC-RDF
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Gradivo je del monografije

Naslov:Construction materials for a sustainable future : proceedings of the 2nd International Conference CoMS 2020/21
Uredniki:Aljoša Šajna, Andraž Legat, Sabina Jordan, Petra Horvat, Ema Kemperle, Sabina Dolenec, Metka Ljubešek, Matej Michelizza
Kraj izida:Ljubljana
Založnik:Slovenian National Building and Civil Engineering Institute
Leto izida:2021
ISBN:978-961-7125-01-6
COBISS.SI-ID:60496131 Novo okno

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0273
Naslov:Gradbeni objekti in materiali

Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:korozija, alkalijsko-aktivirane malte, ekstrakcija porne vode, elektrokemijske korozijske tehnike, vizualna analiza


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