Publication: Structural health monitoring of corroded reinforced concrete beam based on acoustic emmission technique
| dc.contributor.author | Shahid, Khairul Anuar | |
| dc.date.accessioned | 2024-01-10T03:01:53Z | |
| dc.date.available | 2024-01-10T03:01:53Z | |
| dc.date.issued | 2020-08-01 | |
| dc.description.abstract | The ingress of chloride ions into concrete is the leading cause of corrosion in reinforced concrete and the presence of existing cracks will further accelerate the corrosion process. Therefore, an early detection of corrosion initiation and performance evaluation of corroded reinforced concrete is vital for a better maintenance plan. Structural health monitoring (SHM) can be utilized to detect and evaluate the corrosion by implementing the acoustic emission (AE) technique. This study presents early corrosion detection and damage assessment on full-scale reinforced concrete beams. Three pre-cracked and three uncracked specimens were subjected to corrosion test by adding NaCl solution and the process was accelerated using impressed current technique. Further, the corroded uncracked specimens were subjected to cyclic load test (CLT) for identification of types of damage and classification of severity of damage. Both experiments were continuously monitored using the AE technique and the data was collected through located event method. The results showed that the initiation and propagation of corrosion could be detected and characterized using the AE technique and the effect of existing crack could lead to early initiation of corrosion. It was also found that the crack damage characterization (tensile/ shear crack mode) and severity damage classification could be evaluated based on AE parameter analysis. The results based on located event have shown a good agreement with visible crack mapping recorded during the CLT and other damage classification methods. From a structural health monitoring (SHM) perspective, this study emphasizes the elements under SHM including damage detection, characterization of types of damage and severity damage classification for corroded reinforced concrete beams. Therefore, this study could benefit the bridge owner as well as local authority in decision making for maintenance prioritization works. | |
| dc.identifier.uri | https://erepo.usm.my/handle/123456789/18025 | |
| dc.language.iso | en | |
| dc.title | Structural health monitoring of corroded reinforced concrete beam based on acoustic emmission technique | |
| dc.type | Resource Types::text::thesis | |
| dspace.entity.type | Publication | |
| oairecerif.author.affiliation | Universiti Sains Malaysia |