Abstract
In this paper, experimental results from 23 direct shear tests on fiber-reinforced polymer (FRP) strips mechanically fastened (MF) to concrete are reported. Based on the experimental results of one fastener FRP/concrete connection, bearing-slip models are developed to address the MF-FRP/concrete interfacial behavior. Finite element models are then presented to address the interfacial behavior between the FRP strips and the concrete substrate for both the MF-FRP/concrete direct shear specimens, as well as for MF-FRP-strengthened reinforced concrete (RC) beams. Results are presented in terms of ultimate load capacities, load-slip relationships, and strain distributions along the FRP strip. The numerical predictions are compared with experimental data, and a very good agreement is obtained.
| Original language | English |
|---|---|
| Pages (from-to) | 49-59 |
| Number of pages | 11 |
| Journal | ACI Structural Journal |
| Volume | 106 |
| Issue number | 1 |
| Publication status | Published - Jan 2009 |
Keywords
- Bearing-slip model
- External strengthening
- Fiber-reinforced polymer
- Finite element analysis
- Interface
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction