Experimental Investigation on Behaviour of Hybrid Fiber Reinforced Self-Compacting Concrete

Self-Compacting Concrete (SCC) offers several technical and economic benefits, the use of fibers extends its possibilities. Self-Compacting Concrete is a relatively different type of concrete which comparatively have a high flow ability and cohesiveness to conventional concrete. Glenium 8233 is a superplasticizer which acts as a water reducing agent and Viscosity Modifying Agent (VMA) with reference to the EF¬¬NARC specifications are used. In this project glass fibers and steel fibers are used in combination and they are added in three different ratios about 50/50, 25/75 and 75/25 to the concrete. The Self-Compacting criteria of the mixes are attained by conducting the Slump flow, V-funnel and J-Ring tests on the fresh concrete obtained are checked against the specifications given by EFNARC guidelines. The fibers are added to the concrete as 0.25%, 0.5%, 0.75% and 1% to the volume, eventually the inclusion of fiber reduced the flow ability and passing ability of the concrete. The addition of fiber to the concrete increases the mechanical properties and also satisfies EFNARC specifications of Self-Compacting Concrete up to certain ratio but the mix that are added with concentration of more glass fibers failed to attain the Self-Compacting nature, the more the volume of glass fiber the workability is affected.