Fracture Properties of Fiber Reinforced Self Compacting Concrete Notched Beams

Abstract

In recent years, self-compacting concrete (SCC) has gained wide use for placement in congested reinforced
concrete structures with difficult casting conditions. For such applications, the fresh concrete must possess high fluidity and good
cohesiveness. Self-compacting concrete (SCC) is a highly-workable concrete that fills the formwork under its own weight without
any vibration or impact. Fiber reinforced concrete (FRC) is a concrete in which small and discontinuous fibers are dispersed
uniformly. The addition of fibers into concrete mass can dramatically change properties of concrete. This paper examines the
effect fibers addition on rheological properties, mechanical properties and fracture energy of self compacting concrete.
Rheological properties were determined as per EFNARC standards. Mechanical characteristics like compressive strength, splitting
tensile strength and flexural strength obtained as per IS 516 on standard specimen size. Fracture energy (GF) measured using the
three-point bending test on pre-notched beams prescribed by RILEM recommendations. The result shows that workability of SCC
decrease with addition of fibers but ductility and fracture energy increase with addition of fibers in pain self compacting concrete.