Abstract
Post-Tensioned concrete bridges have been used for both rail and road bridges for some 40 years. Problems were first noticed with road bridges due to the use of de-icing salts. However there have been collapses of post-tensioned concrete railway bridges. Following this series of collapses, the Highways Agency enforced a ban on the construction of post-tensioned bridges with metallic tendon ducts. The moratorium was lifted with the introduction of plastic tendon ducts.
This paper will focus on the analysis of impact-echo NDT of concrete beams with plastic tendon ducts - using both a conventional frequency domain analysis and also using the Japanese SIBIE (Stack Imaging of Spectral Amplitudes Based on Impact-Echo) method. It will be shown that the SIBIE method of analysis exhibits great promise in testing these previously difficult to inspect plastic tendon ducts, using impact-echo.
| Original language | English |
|---|---|
| Title of host publication | Innovations in Bridge Engineering Technology |
| Editors | KM Mahmoud |
| Place of Publication | LONDON |
| Publisher | Taylor & Francis |
| Pages | 3-15 |
| Number of pages | 13 |
| ISBN (Print) | 978-0-415-45337-0 |
| Publication status | Published - 2007 |
| Event | Innovations in Bridge Engineering Technology - 4th New York City Bridge Conference 2007 - New York, NY, United Kingdom Duration: 27 Aug 2007 → 28 Aug 2007 |
Conference
| Conference | Innovations in Bridge Engineering Technology - 4th New York City Bridge Conference 2007 |
|---|---|
| Country/Territory | United Kingdom |
| City | New York, NY |
| Period | 27/08/07 → 28/08/07 |