Practical procedure for the precise measurement of geometrical tendon positions in concrete with ultrasonic echo
| Title: | Practical procedure for the precise measurement of geometrical tendon positions in concrete with ultrasonic echo |
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| Authors: | Maack Stefan, Küttenbaum Stefan, Niederleithinger Ernst |
| Source: | MATEC Web of Conferences, Vol 364, p 03008 (2022) |
| Publisher Information: | EDP Sciences, 2022. |
| Publication Year: | 2022 |
| Collection: | LCC:Engineering (General). Civil engineering (General) |
| Subject Terms: | Engineering (General). Civil engineering (General), TA1-2040 |
| More Details: | Existing concrete structures were usually designed for lifetimes of several decades. The current and urgently required efforts to increase sustainability and protect the environment will likely result in extended service lives up to 100 years. To achieve such objectives, it is required to assess structures over their entire lifecycles. Non-destructive testing (NDT) methods can reliably support the assessment of existing structures during the construction, operational, and decommissioning phases. One of the most important and safety-relevant components of a prestressed concrete structure are the tendons. NDT methods such as the ultrasonic echo method are suitable for both the detection and the localization of the tendons, i.e., the measurement of their geometrical position inside the component. The uniqueness of structures, concrete heterogeneity, and varying amounts of secondary components such as the reinforcement represent obstacles in the application of these methods in practice. The aim of this contribution is to demonstrate a practicable procedure, that can be used in the field to determine the parameters required for the measuring data analysis without extensive knowledge about the investigated components. For this purpose, a polyamide reference specimen is used to show which steps are required to obtain reliable imaging information on the position of tendons from the measurement data. The procedure is then demonstrated on a concrete test specimen that covers various relevant and practice-oriented test scenarios, such as varying tendon depths and component thicknesses. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English French |
| ISSN: | 2261-236X |
| Relation: | https://www.matec-conferences.org/articles/matecconf/pdf/2022/11/matecconf_iccrrr22_03008.pdf; https://doaj.org/toc/2261-236X |
| DOI: | 10.1051/matecconf/202236403008 |
| Access URL: | https://doaj.org/article/563e7b060c264802b486718bce2352a7 |
| Accession Number: | edsdoj.563e7b060c264802b486718bce2352a7 |
| Database: | Directory of Open Access Journals |
| ISSN: | 2261236X |
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| DOI: | 10.1051/matecconf/202236403008 |
| Published in: | MATEC Web of Conferences |
| Language: | English French |