Abstract
This paper reports on the structural performance of concrete beams reinforced with hybrid reinforcement. Six concrete beams reinforced with a combination of steel and glass fiber-reinforced polymer (GFRP) bars and three other beams reinforced with only GFRP bars were tested in flexure. Over-reinforced hybrid beams showed higher strength and ductility than their GFRP-reinforced counterparts. The CSA-S806-12 equation accurately predicted the deflections of the hybrid-reinforced beams with high effective reinforcement ratios. Based on the test results, a bond coefficient was proposed to predict the crack width of the hybrid-reinforced beams using the ACI-440.1R-06 equation. A modified deformability factor was also utilized to assess the deformability of the hybrid-reinforced beams. Comparison between the experimental and predicted results showed the adequacy of the models used in predicting the load-carrying capacity, deflection, crack widths, and deformability of hybrid-reinforced concrete beams.
| Original language | English |
|---|---|
| Pages (from-to) | 518-529 |
| Number of pages | 12 |
| Journal | Construction and Building Materials |
| Volume | 96 |
| DOIs | |
| Publication status | Published - Aug 24 2015 |
Keywords
- Composite materials
- Concrete beams
- Cracking
- Deformation
- Ductility
- Fiber reinforced polymer
- Glass fiber
- Hybrid methods
- Reinforced concrete
- Serviceability
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- Materials Science(all)