Flexural performance of over-reinforced beam containing hybrid fibres with GGBS

Abstract

In this study the flexural performance of the over reinforced beam with hybrid fibres and GGBS has been experimentally investigated. Concrete is generally brittle material and it fails in brittle nature which is a major drawback in the over reinforced section. The brittle nature of the concrete can be changed by addition of fibres, proper confinement and addition of certain admixtures. Along with the confinement, Steel fibre, Glass fibre and GGBS were used in this study. Four different volume fractions (0.5%, 1.0%, 1.5%, and 2%) of hybrid fibre with 20% GGBS (as a replacement of cement) were used in this investigation. A total of 13 numbers of beams of size 120 mm × 200 mm × 2100 mm was casted. The load deflection curve, ductility index, moment curvature and flexural rigidity were investigated in this study. The overall flexural performance of the over reinforced beams has been increased by having the confinement, addition of fibres and with the presence of GGBS.