Diagnostics of Reinforcement Conditions in Concrete Structures by GPR, Impact-Echo Method and Metal Magnetic Memory Method
It is important to use adequately reliable non-destructive methods that would be capable of determining the reinforcement conditions in concrete structures. Three different methods: ground penetrating radar, impact-echo method, and metal magnetic memory method were used for testing laboratory-prepar...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/13/5/952 |
| _version_ | 1797415064308809728 |
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| author | Karel Pospisil Monika Manychova Josef Stryk Marta Korenska Radek Matula Vaclav Svoboda |
| author_facet | Karel Pospisil Monika Manychova Josef Stryk Marta Korenska Radek Matula Vaclav Svoboda |
| author_sort | Karel Pospisil |
| collection | DOAJ |
| description | It is important to use adequately reliable non-destructive methods that would be capable of determining the reinforcement conditions in concrete structures. Three different methods: ground penetrating radar, impact-echo method, and metal magnetic memory method were used for testing laboratory-prepared reinforced concrete beams (with a reinforcing bar of the same diameter along its whole length, reinforcing bar locally impaired, and reinforcing bar interrupted). The ground-penetrating radar proved the correlation of signal parameters with the reinforcing bar condition. An impairment/interruption reinforcing bar appeared in the record from measurements in the transversal and longitudinal direction by changes of the observed depth of the reinforcing bar from the concrete surface and direct wave attenuation. The impact-echo method proved that the shifts of the dominant frequencies from the response signal correspond with the impairment/interruption of the reinforcing bar. Results of diagnostics by the metal magnetic memory method were presented by a magnetogram of the magnetic field strength and field gradient on the measured distance. The changes in the magnetic field strength proved different stress concentration zones due to the reinforcing bar condition. The used non-destructive methods showed that they are capable of indicating the different reinforcement conditions in reinforced concrete beams. This paper indicates in which cases and for what reason it is appropriate to use these three methods and in what way they differ from each other. |
| first_indexed | 2024-03-09T05:43:40Z |
| format | Article |
| id | doaj.art-e9b14f09c1f5436eaa192a2153ac98fa |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-09T05:43:40Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-e9b14f09c1f5436eaa192a2153ac98fa2023-12-03T12:23:42ZengMDPI AGRemote Sensing2072-42922021-03-0113595210.3390/rs13050952Diagnostics of Reinforcement Conditions in Concrete Structures by GPR, Impact-Echo Method and Metal Magnetic Memory MethodKarel Pospisil0Monika Manychova1Josef Stryk2Marta Korenska3Radek Matula4Vaclav Svoboda5CDV—Transport Research Centre, Lisenska 33a, 636 00 Brno, Czech RepublicInstitute of Building Structures, Faculty of Civil Engineering, Brno University of Technology, Veveri 95, 602 00 Brno, Czech RepublicCDV—Transport Research Centre, Lisenska 33a, 636 00 Brno, Czech RepublicCDV—Transport Research Centre, Lisenska 33a, 636 00 Brno, Czech RepublicSQZ Ltd., U Mistni Drahy 939/5, 779 00 Olomouc, Czech RepublicPreditest Ltd., Pod Višňovkou 23, 140 00 Praha 4, Czech RepublicIt is important to use adequately reliable non-destructive methods that would be capable of determining the reinforcement conditions in concrete structures. Three different methods: ground penetrating radar, impact-echo method, and metal magnetic memory method were used for testing laboratory-prepared reinforced concrete beams (with a reinforcing bar of the same diameter along its whole length, reinforcing bar locally impaired, and reinforcing bar interrupted). The ground-penetrating radar proved the correlation of signal parameters with the reinforcing bar condition. An impairment/interruption reinforcing bar appeared in the record from measurements in the transversal and longitudinal direction by changes of the observed depth of the reinforcing bar from the concrete surface and direct wave attenuation. The impact-echo method proved that the shifts of the dominant frequencies from the response signal correspond with the impairment/interruption of the reinforcing bar. Results of diagnostics by the metal magnetic memory method were presented by a magnetogram of the magnetic field strength and field gradient on the measured distance. The changes in the magnetic field strength proved different stress concentration zones due to the reinforcing bar condition. The used non-destructive methods showed that they are capable of indicating the different reinforcement conditions in reinforced concrete beams. This paper indicates in which cases and for what reason it is appropriate to use these three methods and in what way they differ from each other.https://www.mdpi.com/2072-4292/13/5/952reinforced concrete beamsteel reinforcing barground penetrating radarimpact-echo methodmetal magnetic memory method |
| spellingShingle | Karel Pospisil Monika Manychova Josef Stryk Marta Korenska Radek Matula Vaclav Svoboda Diagnostics of Reinforcement Conditions in Concrete Structures by GPR, Impact-Echo Method and Metal Magnetic Memory Method Remote Sensing reinforced concrete beam steel reinforcing bar ground penetrating radar impact-echo method metal magnetic memory method |
| title | Diagnostics of Reinforcement Conditions in Concrete Structures by GPR, Impact-Echo Method and Metal Magnetic Memory Method |
| title_full | Diagnostics of Reinforcement Conditions in Concrete Structures by GPR, Impact-Echo Method and Metal Magnetic Memory Method |
| title_fullStr | Diagnostics of Reinforcement Conditions in Concrete Structures by GPR, Impact-Echo Method and Metal Magnetic Memory Method |
| title_full_unstemmed | Diagnostics of Reinforcement Conditions in Concrete Structures by GPR, Impact-Echo Method and Metal Magnetic Memory Method |
| title_short | Diagnostics of Reinforcement Conditions in Concrete Structures by GPR, Impact-Echo Method and Metal Magnetic Memory Method |
| title_sort | diagnostics of reinforcement conditions in concrete structures by gpr impact echo method and metal magnetic memory method |
| topic | reinforced concrete beam steel reinforcing bar ground penetrating radar impact-echo method metal magnetic memory method |
| url | https://www.mdpi.com/2072-4292/13/5/952 |
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