| Titre : |
Strengthening concrete and steel bridges using FRPs |
| Type de document : |
texte imprimé |
| Auteurs : |
Gregg Blaszak, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 16-19 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Composites à fibres
Ponts -- entretien et réparations
Renforts (matériaux)
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Crumbling concrete and rusting steel bridges are a common sight for anyone traveling America’s highway system. Of the 614,387 bridges in the United States, almost 40 percent are 50 years or older and about 10 percent are posted with a load restriction. In its 2017 Infrastructure Report Card, the American Society of Civil Engineers (ASCE) issued a grade of C+ for the condition of the country’s bridges. The nation’s backlog of bridge rehabilitation needs is estimated at $123 billion. The report specifically states that most bridges were designed for a lifespan of 50 years, so an increasing number will soon need major rehabilitation.
The challenges facing every state Department of Transportation (DOT) include how to get more done with less, and minimize the impact to the local community and economy. Rehabilitating to extend the life of a structurally deficient bridge is preferred over replacement. In addition, when it comes to rehabilitating bridges, many DOTs are considering cost-saving, nontraditional methods and materials to help get more done with less. Fiber-reinforced polymer (FRP) strengthening is one nontraditional method where use has grown steadily during the last 30 years and is now being adopted by more and more DOTs.
FRPs are externally bonded to, or wrapped around existing concrete structural members to provide reinforcement where additional reinforcing bars are desired. FRPs are used to restore or increase the load-carrying capacity of bridges or to improve their ability to withstand earthquakes. |
| Note de contenu : |
- FRP strengthening systems
- Wet layup FRP systems
- Pre-cured FRP systems
- FRP strand sheets
- Bridge applications of FRPS : Bridge columns - Bridge piers - Bridge girders - Bridge decks - Steel bridge elements
- Figure : Properties of FRPs compared to traditional reinforcing materials |
| En ligne : |
http://www.paintsquare.com/archive/?fuseaction=view&articleid=6234 |
| Format de la ressource électronique : |
Web |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30363 |
in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 35, N° 1 (01/2018) . - p. 16-19
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