20.500.12556/DiRROS-23422 Characterization of steel corrosion in alkali-activated mortars using advanced techniques Dataset for the research article “Characterization of steel corrosion in alkali-activated mortars using advanced techniques” Alkali-activated materials have emerged as a promising substitute for ordinary Portland cement (OPC) in various applications. This study explores the use of different monitoring techniques for assessing the long-term corrosion behavior of steel in alkali-activated mortars, which remains relatively understudied. Three types of alkali-activated mortars (AAMs) were prepared, based on fly ash, slag, or metakaolin as the precursor material. The corrosion of embedded steel was investigated under wetting and drying cycles with chloride-containing solution for up to one year. Two unconventional techniques were used to monitor corrosion: coupled multi-electrode array sensors (CMEA) to measure partial currents, and electrical resistance (ER) sensors to track thickness reduction. The ER sensors enabled evaluation of general corrosion rates over time, while CMEA provided insight into corrosion initiation and its spatiotemporal distribution. In addition, the corrosion damage on the embedded steel and sensors was evaluated using X-ray computed microtomography (microCT). Distinct corrosion patterns were observed depending on the precursor material: severe corrosion in metakaolin-based AAMs, localized pitting in slag-based AAMs, and moderate damage in fly ash-based AAMs. The study demonstrates the complementary value of CMEA and ER sensors and highlights the challenges of characterizing the long-term corrosion processes in these alternative binder systems. corrosion alkali‐activated materials coupled multi-electrode array (CMEA) electrical resistance (ER) sensor X-ray computed microtomography (microCT) visual analysis korozija alkalijsko-aktivirani materiali mreža sklopljenih elektrod električni uporovni senzor rentgenska računalniška mikrotomografija vizualna analiza true false true Elsevier Angleški jezik Slovenski jezik © 2025 The Author(s). Neznano 2025-08-27 09:24:32 2025-08-27 09:52:15 2025-10-24 03:54:19 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Opis vira z dne 20. 8. 2025; str. 1-17 [article no.] e05165 Vol. 23 Dec. 2025 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 2025-08-11 620.1/.2 2214-5095 10.1016/j.cscm.2025.e05165 246113283 https://www.sciencedirect.com/science/article/pii/S2214509525009635 1 e0ff1c87-8316-11f0-9bb7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=34614 1-s2.0-S2214509525009635-main.pdf 1-s2.0-S2214509525009635-main.pdf 1 5A1D38E65F5AEB95AF1E72D83A9A8FAD 41971d12f4b0bd2416cd86747bfa3d17984ca13bafb21b913b2d5e0b36702412 82a6fb62-831a-11f0-9bb7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=34615 RAZ_Gartner_Nina_2025.pdf RAZ_Gartner_Nina_2025.pdf 1 2CC50935D89163A538525E7C944C6618 f4106ff738482383858a3952f89c50bd714111dc23dbf14c75620e005d7ad3df 6bfbffc9-8324-11f0-9bb7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=34620 http://hdl.handle.net/20.500.12556/DiRROS-22557 0 a33866c0-831a-11f0-9bb7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=34616 Zavod za gradbeništvo Slovenije Dataset for the research article “Characterization of steel corrosion in alkali-activated mortars using advanced techniques” 0 0 0