Behaviour of hybrid fibre reinforced concrete-filled steel tubular beams and columns

Abstract

This paper presents the flexural performance of newly developed hybrid fiber reinforced concrete-filled steel tubular sections. The test parametres are fiber volume fraction and fiber hybridation ratio. Initially mechanical properties studied for 10 mono fiber reinforced concrete mixes using steel and Polypropylene fibres with 0.5%, 1.0%, 1.5%, 2.0% and 2.5% volume fraction. Based on the performance optimum fiber dosage was determined in each fiber, with the same volume fraction three different fiber hybridation was developed. Developed hybrid fiber reinforcement concrete, conventional concrete and optimum mono fiber reinforced concrete was used in the concrete-filled steel tubular beams and columns to determine the structural performance. The test results shows that, fiber reinforced concrete-filled steel tubular beams display significant improvement in the flexural performance.

Structural performance of hybrid FRP laminates on concrete beams made with manufactured sand

“…The study concludes that FGC has more durability and strength characteristics than ordinary concrete. KARUPPANAN et al [18] concludes that the newly developed hybrid fiber reinforced concrete-filled steel tubular sections display significant improvement in the flexural performance. The study also suggests that the optimum fiber dosage in each fiber type can be determined based on the performance of mono fiber reinforced concrete mixes.…”