EXPERIMENTAL STUDY ON CORROSION MONITORING AND ASSESSMENT OF CONCRETE STRUCTURES USING ACOUSTIC EMISSION
This paper aims to employ acoustic emission (AE) technique to detect and identify the level of damage resulting from reinforcing steel corrosion in reinforced concrete structures. Five reinforced concrete prism samples with a constant concrete cover (20 mm) were subjected to an accelerated corrosion...
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| Format: | Article |
| Language: | Arabic |
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Faculty of Engineering, Tanta University
2015-12-01
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| Series: | Journal of Engineering Research - Egypt |
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| Online Access: | https://erjeng.journals.ekb.eg/article_128168_1f1acf667e7d5c707055a6c2c9a24872.pdf |
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| _version_ | 1850159089587322880 |
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| author | Ahmed Abouhussien Assem Hassan |
| author_facet | Ahmed Abouhussien Assem Hassan |
| author_sort | Ahmed Abouhussien |
| collection | DOAJ |
| description | This paper aims to employ acoustic emission (AE) technique to detect and identify the level of damage resulting from reinforcing steel corrosion in reinforced concrete structures. Five reinforced concrete prism samples with a constant concrete cover (20 mm) were subjected to an accelerated corrosion test. The samples were corroded until reaching five different levels of theoretical mass loss: 1, 2, 3, 4 and 5% calculated using Faraday’s law. The corrosion activity of the five samples was continuously monitored using attached AE sensors and a data acquisition system. The acquired AE signal parameters including AE signal strength, counts, energy, and number of hits were analyzed firstly to detect corrosion onset and secondly to predict the extent of damage as a result of corrosion propagation. The results obtained from AE monitoring were analyzed, evaluated, and compared to half-cell potential (HCP) measurements, and the amount of current passing with time. The analysis of these results involved comparing the AE cumulative signal strength (CSS) and each of the actual/theoretical percentages of mass loss, passed electrical current, and HCP readings. This analysis showed that CSS can be correlated to both HCP and electrical current at all degrees of damage from corrosion initiation up to 5% of mass loss. In addition, other AE signal parameters including number of hits, counts, and energy showed a significant increase in their cumulative values as the level of the theoretical mass loss, actual mass loss, and crack widths were increased. The results of this investigation confirmed that AE parameters (especially CSS) can be evaluated to detect corrosion earlier than other available nondestructive testing and evaluation techniques. Furthermore, it can be employed to represent the extent of damage occurring in reinforced concrete structures caused by corrosion of reinforcing steel. |
| format | Article |
| id | doaj-art-002ecd48987f42efabde22ca3d05f265 |
| institution | OA Journals |
| issn | 2356-9441 2735-4873 |
| language | Arabic |
| publishDate | 2015-12-01 |
| publisher | Faculty of Engineering, Tanta University |
| record_format | Article |
| series | Journal of Engineering Research - Egypt |
| spelling | doaj-art-002ecd48987f42efabde22ca3d05f2652025-08-20T02:23:40ZaraFaculty of Engineering, Tanta UniversityJournal of Engineering Research - Egypt2356-94412735-48732015-12-0112015404710.21608/erjeng.2015.128168128168EXPERIMENTAL STUDY ON CORROSION MONITORING AND ASSESSMENT OF CONCRETE STRUCTURES USING ACOUSTIC EMISSIONAhmed Abouhussien0Assem Hassan1Department of Civil Engineering, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X5, Canada.Department of Civil Engineering, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X5, Canada.This paper aims to employ acoustic emission (AE) technique to detect and identify the level of damage resulting from reinforcing steel corrosion in reinforced concrete structures. Five reinforced concrete prism samples with a constant concrete cover (20 mm) were subjected to an accelerated corrosion test. The samples were corroded until reaching five different levels of theoretical mass loss: 1, 2, 3, 4 and 5% calculated using Faraday’s law. The corrosion activity of the five samples was continuously monitored using attached AE sensors and a data acquisition system. The acquired AE signal parameters including AE signal strength, counts, energy, and number of hits were analyzed firstly to detect corrosion onset and secondly to predict the extent of damage as a result of corrosion propagation. The results obtained from AE monitoring were analyzed, evaluated, and compared to half-cell potential (HCP) measurements, and the amount of current passing with time. The analysis of these results involved comparing the AE cumulative signal strength (CSS) and each of the actual/theoretical percentages of mass loss, passed electrical current, and HCP readings. This analysis showed that CSS can be correlated to both HCP and electrical current at all degrees of damage from corrosion initiation up to 5% of mass loss. In addition, other AE signal parameters including number of hits, counts, and energy showed a significant increase in their cumulative values as the level of the theoretical mass loss, actual mass loss, and crack widths were increased. The results of this investigation confirmed that AE parameters (especially CSS) can be evaluated to detect corrosion earlier than other available nondestructive testing and evaluation techniques. Furthermore, it can be employed to represent the extent of damage occurring in reinforced concrete structures caused by corrosion of reinforcing steel.https://erjeng.journals.ekb.eg/article_128168_1f1acf667e7d5c707055a6c2c9a24872.pdfacoustic emissioncorrosion monitoringnondestructive testing and evaluationreinforced concrete structures |
| spellingShingle | Ahmed Abouhussien Assem Hassan EXPERIMENTAL STUDY ON CORROSION MONITORING AND ASSESSMENT OF CONCRETE STRUCTURES USING ACOUSTIC EMISSION Journal of Engineering Research - Egypt acoustic emission corrosion monitoring nondestructive testing and evaluation reinforced concrete structures |
| title | EXPERIMENTAL STUDY ON CORROSION MONITORING AND ASSESSMENT OF CONCRETE STRUCTURES USING ACOUSTIC EMISSION |
| title_full | EXPERIMENTAL STUDY ON CORROSION MONITORING AND ASSESSMENT OF CONCRETE STRUCTURES USING ACOUSTIC EMISSION |
| title_fullStr | EXPERIMENTAL STUDY ON CORROSION MONITORING AND ASSESSMENT OF CONCRETE STRUCTURES USING ACOUSTIC EMISSION |
| title_full_unstemmed | EXPERIMENTAL STUDY ON CORROSION MONITORING AND ASSESSMENT OF CONCRETE STRUCTURES USING ACOUSTIC EMISSION |
| title_short | EXPERIMENTAL STUDY ON CORROSION MONITORING AND ASSESSMENT OF CONCRETE STRUCTURES USING ACOUSTIC EMISSION |
| title_sort | experimental study on corrosion monitoring and assessment of concrete structures using acoustic emission |
| topic | acoustic emission corrosion monitoring nondestructive testing and evaluation reinforced concrete structures |
| url | https://erjeng.journals.ekb.eg/article_128168_1f1acf667e7d5c707055a6c2c9a24872.pdf |
| work_keys_str_mv | AT ahmedabouhussien experimentalstudyoncorrosionmonitoringandassessmentofconcretestructuresusingacousticemission AT assemhassan experimentalstudyoncorrosionmonitoringandassessmentofconcretestructuresusingacousticemission |