| Title | Replaceable Grouted External Post-Tensioned Tendons |
|---|---|
| Record ID | 78477 |
| Personal Name Creator |
Ledesma, T. |
| Corporate Creator | WSP |
| Corporate Contributor |
United States. Federal Highway Administration |
| Publisher | United States. Department of Transportation. Federal Highway Administration |
| Publication Date | 20190901 |
| Language | English |
| Abstract | Corrosion of prestressing strands has required replacement of external post-tensioning tendons in several existing post-tensioned bridges. External tendons are commonly used in concrete box girder bridges constructed using the span-by-span or balanced cantilever methods. Currently in the US, external tendons are discretely bonded at anchorages and deviator locations. Replacement of these types of tendons is a complex and time-consuming operation with safety concerns for personnel. Under task order 5009, WSP conducted a state-of-the-art review, then developed and presented guidance for fully replaceable grouted external tendons. Specific details included post-tensioning system components, structural design and detailing aspects, and tendon installation and replacement procedures. |
| Rosap ID | dot:51760 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/51760 |
| TRT Terms | Tensioning; Bridge design; Box girder bridges; Equipment replacement; Material tendons |
| Geographical Coverage |
United States |
| TRIS Online Accession No |
1754933 |
| Contract Number | DTFH61-14-D-00048 |
| Report Number | FHWA-HIF-19-067 |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/78000/78400/78477/FHWA-HIF-19-067.pdf |
| Alternative URL | https://www.fhwa.dot.gov/bridge/concrete/hif19067.pdf |
| Format | |
| Database | NTL Digital Repository |