Fracture Properties of Fiber Reinforced Self Compacting Concrete Notched Beams
Ph. D Research Scholar, Applied Mechanics Department, S. V. National Institute of Technology, Surat , India, India
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.
