Behavior of High Performance Fiber Reinforced Concrete Columns: Experimental Investigation

This study used an experimental programme to explore the behaviour of square short high-performance concrete columns with and without steel fiber when subjected to concentric compression force. On the uniaxial behaviour of reinforced HPC columns, the effects of concrete strength, percent of longitudinal reinforcement, spacing of lateral confined stirrups, volumetric steel fibre ratio, and aspect ratio of steel fibre were shown and discussed. The findings reveal that adding discrete fibers to HPC mixtures in reinforced concrete columns increases the strength and ductility of the axially loaded reinforced columns while also preventing premature spalling of the concrete cover. To achieve the appropriate post-beak deformability, high performance concrete columns require more confinement than normal strength concrete columns.