| Title |
Shear Strength of One-way Concrete Slabs Reinforced with Fiber Reinforced Polymer (FRP) Bars |
| Authors |
Seo Dae-Won ; Han Byum-Seok ; Shin Sung-Woo |
| Keywords |
Fiber Reinforced Polymers ; Concrete Slabs ; Shear Strength ; Composite Materials |
| Abstract |
Fiber reinforced polymer(FRP) bars are currently available as a alternative for conventional steel bars in concrete structures exposed to deiceing salts and marine environments. Compared to steel, FRP bars have high tensile strength, low modulus of elasticity and elastic-brittle stress-strain behavior. Due to the low modulus of elasticity of FRP bars, concrete members reinforced longitudinally with FRP bars experience reduced shear strength compared to the shear strength of those reinforced with the steel reinforcement. This paper evaluates the shear strength of one-way concrete slabs reinforced with fiber reinforced polymer(FRP) bars. Nine slabs were constructed and tested. The slabs were 4,000 mm long × 1,200 mm wide × 200 mm deep. The test parameters were the type of FRP reinforcing bars and the reinforcement ratio. The slabs were tested under four-point bending over simply supported clear span of 3,000 mm and a shear span of 1,000 mm. The experimental shear strengths were compared with the JSCE recommendations, the CAN/CSA code, and the ACI 440.1R.03 design guide lines. The results indicated that the ACI 440.1R-03 design method for prediction the concrete shear strength of FRP slabs is very conservative. |