Fracture Properties of Self Compacting Concrete with Steel Fibers using Notched Beam
Keywords:
Self Compacting Concrete, Steel Fibers, Notched Beam, Fracture Properties, FRCAbstract
Recent years, self-compacting concrete (SCC) has gained wide use for placement in 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 work examines the effect fibers addition on rheological properties, mechanical properties and fracture energy of self compacting concrete. Rheological properties like J Ring, U Box, L Box were determined as per EFNARC standards. Mechanical characteristics like compressive 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.
