Abstract
The aging infrastructure of the United States requires significant attention for developing new materials and techniques to effectively and economically revive this aging system. Damaged steel-concrete composite girders can be repaired and retrofitted by epoxy bonding carbon fiber-reinforced polymer (CFRP) laminates to the critical areas of tension flanges. This paper presents the results of a study on the behavior of damaged steel-concrete composite girders repaired with CFRP sheets under static loading. A total of three large-scale composite girders made of W355×13.6 A36 steel sections and 75-mm-thick by 910-mm-wide concrete slabs were prepared and tested. One, three, and five layers of CFRP sheet were used to repair the specimen with 25, 50, and 100% loss of the cross-sectional area of their tension flange, respectively. The test results showed that epoxy bonded CFRP sheet could restore the ultimate load-carrying capacity and stiffness of damaged steel-concrete composite girders. Comparison of the experimental and analytical results revealed that the traditional methods of analysis of composite beams were conservative.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 311-322 |
| Number of pages | 12 |
| Journal | Journal of Composites for Construction |
| Volume | 7 |
| Issue number | 4 |
| DOIs | |
| State | Published - Nov 2003 |
Keywords
- Carbon
- Concrete
- Fiber reinforced polymers
- Girders
- Rehabilitation
- Sheets
- Steel
ASJC Scopus subject areas
- Ceramics and Composites
- Civil and Structural Engineering
- Building and Construction
- Mechanics of Materials
- Mechanical Engineering