Flexural Behavior of Reinforced Concrete Beams with High Performance Fibers

Abstract

High-performance concrete is a specialized series of concrete designed to provide superior mechanical and physical properties that cannot be achieved through the conventional design. Using high-performance concrete in the construction field can reduce the dead weight, provide a longer span, and increase the service life. In this paper, a full experimental program is conducted to study the effect of glass and carbon fibers on the flexural behavior of reinforced concrete (RC) beams. A total of 15 RC beam specimens are prepared and divided into four main groups according to their added fiber materials, which are (S-Steel fiber), and E (E-Glass fiber), carbon fiber, and S-Glass with carbon fiber. All the reinforced fibers are used at 1.5% of the cement weight. The beams are reinforced using the fiber materials at the hinging zone then tested under concentrated static load placed at the mid-span. The results show that using highperformance fibers can improve the ultimate load capacity, ductility, and absorption energy of the RC beams.

Flexural Behaviour of Hybrid Fibre-Reinforced Ternary Blend Geopolymer Concrete Beams

“…After the multiple cracking stages, the slope of the curve decreases for the specimen reinforced with hybrid fibre [33]. A sudden drop in the load was observed beyond the peak load for the specimens without fibres and a more or less flat curve for the specimens with hybrid fibres [34]. The specimens with higher fibre content showed less deformation for the same magnitude of load due to the higher stiffness of steel fibres.…”