Effect of self-healing of cracks in chloride ion diffusion and corrosion of engineered cementitious composites
This study investigates the chloride penetration resistance and electrochemical behavior of self-healing engineered cementitious composites (ECC). The experimental program involved exposing cracked ECC samples to NaCl solution, while monitoring chloride penetration and self-healing using water-perme...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425000389 |
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| author | Abel Shiferaw Alemu Gebremicael Liyew Bang Yeon Lee Hyeong-Ki Kim |
| author_facet | Abel Shiferaw Alemu Gebremicael Liyew Bang Yeon Lee Hyeong-Ki Kim |
| author_sort | Abel Shiferaw Alemu |
| collection | DOAJ |
| description | This study investigates the chloride penetration resistance and electrochemical behavior of self-healing engineered cementitious composites (ECC). The experimental program involved exposing cracked ECC samples to NaCl solution, while monitoring chloride penetration and self-healing using water-permeability tests. Electrochemical measurements, including open circuit potential, linear polarization resistance, and electrochemical impedance spectroscopy, were used to evaluate reinforcement corrosion over a 91-day period. Results show that water-tightness does not guarantee protection against chloride ingress, as cracks with widths exceeding 0.15 mm allowed chloride penetration despite self-healing. Reinforcement depassivation occurred within 1–3 days of chloride exposure, but self-healing reduced the corrosion current back to pre-crack levels within 1–2 months, highlighting its role in delaying corrosion propagation. These findings emphasize the importance of crack width control in achieving effective self-healing and suggest that electrochemical impedance spectroscopy is a useful technique for monitoring the self-healing process in reinforced ECC structures. |
| format | Article |
| id | doaj-art-a09e4b1e2d2344f59ef9dea1b0a4a1ec |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-a09e4b1e2d2344f59ef9dea1b0a4a1ec2025-01-18T05:04:44ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013510541071Effect of self-healing of cracks in chloride ion diffusion and corrosion of engineered cementitious compositesAbel Shiferaw Alemu0Gebremicael Liyew1Bang Yeon Lee2Hyeong-Ki Kim3Department of Architectural Engineering, Chosun University, Gwangju 61452, Republic of KoreaDepartment of Architectural Engineering, Chosun University, Gwangju 61452, Republic of KoreaSchool of Architecture, Chonnam National University, Gwangju 61186, Republic of KoreaDepartment of Architectural Engineering, Chosun University, Gwangju 61452, Republic of Korea; Corresponding author.This study investigates the chloride penetration resistance and electrochemical behavior of self-healing engineered cementitious composites (ECC). The experimental program involved exposing cracked ECC samples to NaCl solution, while monitoring chloride penetration and self-healing using water-permeability tests. Electrochemical measurements, including open circuit potential, linear polarization resistance, and electrochemical impedance spectroscopy, were used to evaluate reinforcement corrosion over a 91-day period. Results show that water-tightness does not guarantee protection against chloride ingress, as cracks with widths exceeding 0.15 mm allowed chloride penetration despite self-healing. Reinforcement depassivation occurred within 1–3 days of chloride exposure, but self-healing reduced the corrosion current back to pre-crack levels within 1–2 months, highlighting its role in delaying corrosion propagation. These findings emphasize the importance of crack width control in achieving effective self-healing and suggest that electrochemical impedance spectroscopy is a useful technique for monitoring the self-healing process in reinforced ECC structures.http://www.sciencedirect.com/science/article/pii/S2238785425000389Engineered cementitious composites (ECC)CorrosionSelf healingCrackChloride attackDurability |
| spellingShingle | Abel Shiferaw Alemu Gebremicael Liyew Bang Yeon Lee Hyeong-Ki Kim Effect of self-healing of cracks in chloride ion diffusion and corrosion of engineered cementitious composites Journal of Materials Research and Technology Engineered cementitious composites (ECC) Corrosion Self healing Crack Chloride attack Durability |
| title | Effect of self-healing of cracks in chloride ion diffusion and corrosion of engineered cementitious composites |
| title_full | Effect of self-healing of cracks in chloride ion diffusion and corrosion of engineered cementitious composites |
| title_fullStr | Effect of self-healing of cracks in chloride ion diffusion and corrosion of engineered cementitious composites |
| title_full_unstemmed | Effect of self-healing of cracks in chloride ion diffusion and corrosion of engineered cementitious composites |
| title_short | Effect of self-healing of cracks in chloride ion diffusion and corrosion of engineered cementitious composites |
| title_sort | effect of self healing of cracks in chloride ion diffusion and corrosion of engineered cementitious composites |
| topic | Engineered cementitious composites (ECC) Corrosion Self healing Crack Chloride attack Durability |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425000389 |
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