Publication Details

Khan, Q. S., Sheikh, M. Neaz. & Hadi, M. N. S. (2015). Tension and compression testing of fibre reinforced polymer (FRP) bars. In Z. Wu, G. Wu & X. Wang (Eds.), Joint Conference of the 12th International Symposium on Fiber Reinforced Polymers for Reinforced Concrete Structures (FRPRCS-12) & the 5th Asia-Pacific Conference on Fiber Reinforced Polymers in Structures (APFIS-2015) (pp. 1-6).


Corrosion of reinforcement in steel Reinforced Concrete (RC) columns significantly decreases both the strength and ductility of RC columns. Fibre Reinforced Polymer (FRP) bars have emerged as an attractive alternative to the traditional steel bars because of higher ultimate tensile strength to weight ratio and higher corrosion resistance of the FRP bars. However, Standard test methods for different types of FRP bars both in tension and compression have not been fully developed. This study presents the results of tension and compression tests of circular pultruded Glass FRP (GFRP) bars and Carbon FRP (CFRP) bars of 15 mm and 15.9 mm diameter, respectively. The tensile and the compressive properties of these bars were determined according to ASTM D7205/M7205-06 (tension test) and ASTM D695-10 (compression test) with some modifications. For tensile properties, three 1555 mm long GFRP bars and three 1555 mm long CFRP bars were tested in tension. For compressive properties, five 80 mm long GFRP and five 60 mm long CFRP bars were tested in compression. In tension, the tested FRP bars failed due to rupture of fibres whereas in compression the tested FRP bars failed due to separation of longitudinal fibres. The experimental results showed that the ultimate strength and modulus of elasticity of FRP bars in tension are 1.67 and 1.59 times greater than in compression respectively.