Comparison of GFRP and CFRP confinement of normal and high strength concrete

Abstract

An experimental and analytical study was conducted to quantify the increase in strength and ductility of GFRP and CFRP confined concrete cylinders made of normal strength concrete and high strength concrete. The test data are also compared with theoretical predictions from three North American and European FRP design guidelines. The test results show that the effectiveness of both GFRP and CFRP is more pronounced in normal strength concrete compared to high strength concrete.

Keywords

• confinement of concrete
• carbon fibres
• glass fibres
• longitudinal strain
• volumetric strain
• energy absorption