In-depth defect inspection of precast double walls using non-destructive techniques
Precast double walls are frequently used for building applications and consist of a pair of precast reinforced concrete shells connected by a lattice girder creating an inner cavity. Once placed at its final position this cavity is filled with freshly cast and compacted concrete. Aside from benefits...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2023/05/matecconf_smartincs2023_04008.pdf |
| _version_ | 1797835263315017728 |
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| author | Craeye Bart Vos Maxim |
| author_facet | Craeye Bart Vos Maxim |
| author_sort | Craeye Bart |
| collection | DOAJ |
| description | Precast double walls are frequently used for building applications and consist of a pair of precast reinforced concrete shells connected by a lattice girder creating an inner cavity. Once placed at its final position this cavity is filled with freshly cast and compacted concrete. Aside from benefits such as increased ease in installation, reduced cost and shorter construction time also some pitfalls are recognized. Due to the restrained space and the presence of the truss girder undesired defects (e.g. voids, honeycombing, etc.) might occur without being noticed, as the outer wall elements also act as formwork. This actually might reduce the load capacity and jeopardize the structural integrity of the concrete structure. Therefore, different non-destructive tests are being used in order to assess the filling degree of the cavity in the double walls and to localize defects, with varying success ratio (i.e. the detectability). Different techniques were applied on a test wall with intentionally embedded defects (polystyrene blocks) with varying diameter: rebound hammer, ultrasonic pulse velocity via direct transmission, ultrasonic shear-wave tomography, ground penetrating radar and active infrared thermography. The success and the limits of these techniques for in depth defect localization are being discussed in this paper. The effect of the selected detection method and the surface-on-depth ratio of the defect itself has an effect on its detectability. |
| first_indexed | 2024-04-09T14:51:22Z |
| format | Article |
| id | doaj.art-d0bea9c74859437d9661562ce73568dd |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-04-09T14:51:22Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-d0bea9c74859437d9661562ce73568dd2023-05-02T09:34:12ZengEDP SciencesMATEC Web of Conferences2261-236X2023-01-013780400810.1051/matecconf/202337804008matecconf_smartincs2023_04008In-depth defect inspection of precast double walls using non-destructive techniquesCraeye Bart0Vos Maxim1University of Antwerp, Faculty of Applied Engineering, EMIB Research GroupUniversity of Antwerp, Faculty of Applied Engineering, EMIB Research GroupPrecast double walls are frequently used for building applications and consist of a pair of precast reinforced concrete shells connected by a lattice girder creating an inner cavity. Once placed at its final position this cavity is filled with freshly cast and compacted concrete. Aside from benefits such as increased ease in installation, reduced cost and shorter construction time also some pitfalls are recognized. Due to the restrained space and the presence of the truss girder undesired defects (e.g. voids, honeycombing, etc.) might occur without being noticed, as the outer wall elements also act as formwork. This actually might reduce the load capacity and jeopardize the structural integrity of the concrete structure. Therefore, different non-destructive tests are being used in order to assess the filling degree of the cavity in the double walls and to localize defects, with varying success ratio (i.e. the detectability). Different techniques were applied on a test wall with intentionally embedded defects (polystyrene blocks) with varying diameter: rebound hammer, ultrasonic pulse velocity via direct transmission, ultrasonic shear-wave tomography, ground penetrating radar and active infrared thermography. The success and the limits of these techniques for in depth defect localization are being discussed in this paper. The effect of the selected detection method and the surface-on-depth ratio of the defect itself has an effect on its detectability.https://www.matec-conferences.org/articles/matecconf/pdf/2023/05/matecconf_smartincs2023_04008.pdf |
| spellingShingle | Craeye Bart Vos Maxim In-depth defect inspection of precast double walls using non-destructive techniques MATEC Web of Conferences |
| title | In-depth defect inspection of precast double walls using non-destructive techniques |
| title_full | In-depth defect inspection of precast double walls using non-destructive techniques |
| title_fullStr | In-depth defect inspection of precast double walls using non-destructive techniques |
| title_full_unstemmed | In-depth defect inspection of precast double walls using non-destructive techniques |
| title_short | In-depth defect inspection of precast double walls using non-destructive techniques |
| title_sort | in depth defect inspection of precast double walls using non destructive techniques |
| url | https://www.matec-conferences.org/articles/matecconf/pdf/2023/05/matecconf_smartincs2023_04008.pdf |
| work_keys_str_mv | AT craeyebart indepthdefectinspectionofprecastdoublewallsusingnondestructivetechniques AT vosmaxim indepthdefectinspectionofprecastdoublewallsusingnondestructivetechniques |