A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Damage Detection of Post-tensioned Cables in Existing Bridges with Digital Radiography
The evaluation of the residual efficiency of post-tensioned cables in existing prestressed concrete bridges is a very challenging and important task for the structural safety assessment. Indeed, some collapses of this kind of bridges occurred recently in Italy were attributed to the failure of cables. However, non-destructive tests for the damage detection of cables are not yet effective and well-established in the literature. The paper presents a new testing technique, based on Digital Radiography (DR), to check the integrity of post-tensioned cables in beam webs by means of radiographic images able to detect both the corrosion of wires or strands and the grouting consistency in ducts. The DR technique has been recently applied in two highway viaducts and validated through local destructive core samples, detecting the real state of cables. The results of this testing campaign are widely discussed.
Damage Detection of Post-tensioned Cables in Existing Bridges with Digital Radiography
The evaluation of the residual efficiency of post-tensioned cables in existing prestressed concrete bridges is a very challenging and important task for the structural safety assessment. Indeed, some collapses of this kind of bridges occurred recently in Italy were attributed to the failure of cables. However, non-destructive tests for the damage detection of cables are not yet effective and well-established in the literature. The paper presents a new testing technique, based on Digital Radiography (DR), to check the integrity of post-tensioned cables in beam webs by means of radiographic images able to detect both the corrosion of wires or strands and the grouting consistency in ducts. The DR technique has been recently applied in two highway viaducts and validated through local destructive core samples, detecting the real state of cables. The results of this testing campaign are widely discussed.
Damage Detection of Post-tensioned Cables in Existing Bridges with Digital Radiography
Lecture Notes in Civil Engineering
Pellegrino, Carlo (editor) / Faleschini, Flora (editor) / Zanini, Mariano Angelo (editor) / Matos, José C. (editor) / Casas, Joan R. (editor) / Strauss, Alfred (editor) / Innocenzi, Raoul Davide (author) / Pigliapoco, Giulia (author) / Carbonari, Sandro (author) / Gara, Fabrizio (author)
International Conference of the European Association on Quality Control of Bridges and Structures ; 2021 ; Padua, Italy
2021-12-12
8 pages
Article/Chapter (Book)
Electronic Resource
English
Fatigue resistance evaluations for existing post-tensioned concrete bridges
| British Library Conference Proceedings | 2004
Damage Detection in Post Tensioned Cables by Ambient Vibration Monitoring
| British Library Conference Proceedings | 2001
Inspecting post-tensioned bridges
| British Library Online Contents | 1998