Failure mechanisms of corroded/non-corroded RC cylinder under axial compressive loading evaluated by AE technique
This study applied the acoustic emission (AE) technique to investigate mechanical behaviors and failure processes of corroded and non-corroded reinforced concrete (RC) cylinders, subjected to compressive loading. RC cylinders with 150 mm diameter and 300 mm height were tested. A set of twelve specim...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-09-01
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| Series: | Frontiers in Built Environment |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fbuil.2022.947310/full |
| _version_ | 1811209683450462208 |
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| author | Mouhamadou Mountakhah Seye Yuma Kawasaki |
| author_facet | Mouhamadou Mountakhah Seye Yuma Kawasaki |
| author_sort | Mouhamadou Mountakhah Seye |
| collection | DOAJ |
| description | This study applied the acoustic emission (AE) technique to investigate mechanical behaviors and failure processes of corroded and non-corroded reinforced concrete (RC) cylinders, subjected to compressive loading. RC cylinders with 150 mm diameter and 300 mm height were tested. A set of twelve specimens was arranged into four groups of three specimens. These were the specimens corroded at the initiation stage, at the acceleration stage, at the deterioration stage of rebars, and another group was prepared as non-corroded specimens. The other set of twelve specimen was corroded as the same as the one, but axial rebars were coated with epoxy resin. After performing electrical corrosion, by applying 200 mA current under salt water immersion of 3% chloride concentration, axial compression tests were conducted on all specimens up to failure, using the AE technique. The corrosion of rebars inside the cylinders trends to decrease the compressive load-carrying performance of the RC cylinders, with the occurrence of early damages during the axial compression test. The analysis of the measured AE parameters enabled the classification of the generated damages into shear-type and tensile-type damages, which provided a characteristic signature of the failure mechanism of the tested cylinders. Next, it provided a 3D visualization of the damage events location and evolution inside the cylinders. Then, it gave the means to correlate the damage process of the RC cylinders, with their specific condition related to their corrosion level, prior to the compression test. |
| first_indexed | 2024-04-12T04:43:33Z |
| format | Article |
| id | doaj.art-7fa971b73d694fc0ba64161294dd6def |
| institution | Directory Open Access Journal |
| issn | 2297-3362 |
| language | English |
| last_indexed | 2024-04-12T04:43:33Z |
| publishDate | 2022-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Built Environment |
| spelling | doaj.art-7fa971b73d694fc0ba64161294dd6def2022-12-22T03:47:34ZengFrontiers Media S.A.Frontiers in Built Environment2297-33622022-09-01810.3389/fbuil.2022.947310947310Failure mechanisms of corroded/non-corroded RC cylinder under axial compressive loading evaluated by AE techniqueMouhamadou Mountakhah Seye0Yuma Kawasaki1College of Science and Engineering, Ritsumeikan University, Kyoto, JapanDepartment of Civil and Environmental Engineering, Ritsumeikan University, Kyoto, JapanThis study applied the acoustic emission (AE) technique to investigate mechanical behaviors and failure processes of corroded and non-corroded reinforced concrete (RC) cylinders, subjected to compressive loading. RC cylinders with 150 mm diameter and 300 mm height were tested. A set of twelve specimens was arranged into four groups of three specimens. These were the specimens corroded at the initiation stage, at the acceleration stage, at the deterioration stage of rebars, and another group was prepared as non-corroded specimens. The other set of twelve specimen was corroded as the same as the one, but axial rebars were coated with epoxy resin. After performing electrical corrosion, by applying 200 mA current under salt water immersion of 3% chloride concentration, axial compression tests were conducted on all specimens up to failure, using the AE technique. The corrosion of rebars inside the cylinders trends to decrease the compressive load-carrying performance of the RC cylinders, with the occurrence of early damages during the axial compression test. The analysis of the measured AE parameters enabled the classification of the generated damages into shear-type and tensile-type damages, which provided a characteristic signature of the failure mechanism of the tested cylinders. Next, it provided a 3D visualization of the damage events location and evolution inside the cylinders. Then, it gave the means to correlate the damage process of the RC cylinders, with their specific condition related to their corrosion level, prior to the compression test.https://www.frontiersin.org/articles/10.3389/fbuil.2022.947310/fullacoustic emissioncompression testelectrical corrosionlocation analysisreinforced concrete columnconcrete column |
| spellingShingle | Mouhamadou Mountakhah Seye Yuma Kawasaki Failure mechanisms of corroded/non-corroded RC cylinder under axial compressive loading evaluated by AE technique Frontiers in Built Environment acoustic emission compression test electrical corrosion location analysis reinforced concrete column concrete column |
| title | Failure mechanisms of corroded/non-corroded RC cylinder under axial compressive loading evaluated by AE technique |
| title_full | Failure mechanisms of corroded/non-corroded RC cylinder under axial compressive loading evaluated by AE technique |
| title_fullStr | Failure mechanisms of corroded/non-corroded RC cylinder under axial compressive loading evaluated by AE technique |
| title_full_unstemmed | Failure mechanisms of corroded/non-corroded RC cylinder under axial compressive loading evaluated by AE technique |
| title_short | Failure mechanisms of corroded/non-corroded RC cylinder under axial compressive loading evaluated by AE technique |
| title_sort | failure mechanisms of corroded non corroded rc cylinder under axial compressive loading evaluated by ae technique |
| topic | acoustic emission compression test electrical corrosion location analysis reinforced concrete column concrete column |
| url | https://www.frontiersin.org/articles/10.3389/fbuil.2022.947310/full |
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