Recent Innovations for Enhancing Durability of Post-Tensioning Systems in the USA
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Bibliografische Angaben
| Autor(en): |
Erich Aigner
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| Medium: | Tagungsbeitrag | ||||
| Sprache(n): | Englisch | ||||
| Tagung: | 17th IABSE Congress: Creating and Renewing Urban Structures – Tall Buildings, Bridges and Infrastructure, Chicago, USA, 17-19 September 2008 | ||||
| Veröffentlicht in: | IABSE Congress Chicago 2008 | ||||
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| Seite(n): | 556-557 | ||||
| Anzahl der Seiten (im PDF): | 9 | ||||
| Jahr: | 2008 | ||||
| DOI: | 10.2749/222137908796293811 | ||||
| Abstrakt: |
After more then 50 years of post-tensioned bridge construction, several recent failures in the UK and Florida alerted both government agencies and the construction industry to improve the design, fabrication, installation and testing of post-tensioning tendons. The largest supplier of post-tensioning materials in the USA, Dywidag Systems International (DSI), redesigned its hardware and revised installation procedures to protect tendons for years to come. Improved grout mixtures were developed using new methods intended to minimize voids and ensure adequate corrosion protection. |
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