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- Title
Effects of Confinement on the Splice Strength of Bundled Glass Fiber-Reinforced Polymer Bars in Concrete Beams.
- Authors
Asadian, Alireza; Eslami, Abolfazl; Farghaly, Ahmed Sabry; Benmokrane, Brahim
- Abstract
This study focuses on the effects of concrete cover and transverse reinforcement on the splice strength of bundled glass fiberreinforced polymer (GFRP) bars. The experimental program comprised eight full-scale beam specimens measuring 5200 x 300 x 450 mm (204.72 x 11.81 x 17.71 in.). Sand-coated GFRP bars of two different diameters (No. 4 [12.7 mm] and No. 5 [15.9 mm]) were used as longitudinal reinforcement. A normalweight ready mixed concrete with a compressive strength of approximately 40 MPa (5.8 ksi) was used to cast the test specimens. The variables in the experimental program were the spacing of transverse reinforcement (125 and 250 mm [4.92 and 9.84 in.]) and concrete clear cover (32 and 51 mm [1.25 and 2 in.]). The results show that providing transverse reinforcement along the splice zone can significantly improve the splice strength of bundled GFRP bars. It was also found that the splice strength of bundled GFRP bars was not dependent on the concrete cover for clear cover-to-bar diameter ratios greater than 2.5. In addition, providing transverse reinforcement was proven to be an effective mean to reduce the maximum and average crack widths of beams reinforced with spliced bundled GFRP bars.
- Subjects
POLYMER-impregnated concrete; CONCRETE beams; TRANSVERSE reinforcements; GLASS; POWDERED glass
- Publication
ACI Structural Journal, 2020, Vol 117, Issue 5, p67
- ISSN
0889-3241
- Publication type
Article
- DOI
10.14359/51725904