20.500.12556/DiRROS-25138 Evolution of macrocell and microcell corrosion in concrete subjected to simulated tiding The aim of this study was to investigate the interaction between macrocell and microcell corrosion processes in a concrete column exposed to tidal conditions simulated by sinusoidal water-level changes. Macrocell corrosion currents were continuously measured for 19 weeks along the column height using coupled multi-electrodes (CMEs). Cumulative corrosion damage and the morphology of corrosion products were analysed using X-ray microCT, SEM, and Raman spectroscopy. The results showed complex patterns of anodic and cathodic activity, including sinusoidal and switch-like current behaviour, which depended on the water level position and exposure time. Corrosion typically initiated in the upper tidal zone, but the most corroded individual electrode was located near mid-tide. Damage distribution was influenced by both microcell and macrocell corrosion, where microcell corrosion was most prevalent in the high-tide area, whereas macrocell activity contributed to corrosion damage in several exposure zones. SEM and Raman analyses confirmed a correlation between corrosion type and corrosion product morphology. An attempt was made to explain the recognised corrosion patterns along the vertical position and the ratios between microcell and macrocell corrosion on individual electrodes were esti- mated. Additionally, new questions were raised that highlight the complexity of corrosion processes under tidal cycling and emphasise the need for further research into these phenomena. corrosion coupled multi-electrode array simulated tiding reinforced concrete macrocell corrosion korozija sklopljena mreža elektrod simulirano plimovanje armiran beton makrocelična korozija true false true Elsevier Angleški jezik Slovenski jezik © 2025 The Author(s) Neznano 2026-01-12 13:44:22 2026-01-12 13:47:57 2026-02-19 06:55:12 0000-00-00 00:00:00 2026 0 0 str. 1-13 [article no.] 148026 Vol. 549 Feb. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2025-12-16 544.5/.6 1873-3859 10.1016/j.electacta.2025.148026 263233283 https://doi.org/10.1016/j.electacta.2025.148026 0 6c9102ff-efb4-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=37866 RAZ_Hren_Miha_2026.pdf RAZ_Hren_Miha_2026.pdf 1 CCA384A4C8B9EA046E48316CB0E48483 0f9fa02938bd0d698c03156e3caa62543bbc7f8a74a89a3a771bf543ea9c7260 cbac7a6f-efb4-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=37867 RAZ_Hren_Miha_2026.docx RAZ_Hren_Miha_2026.docx 1 C8383AB4C009D070FAEF4524BCD5EFFB 3b6090bb28b6b88c1cf9dbb979242260977255965877533157a17775104c1e72 e3eed00b-efb4-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=37868 Zavod za gradbeništvo Slovenije 0 0 0