Study on High Strength Fiber Reinforced Concrete with Silica Fume and Metakaolin as a Partial Replacement of Cement

M. Bhupal, A.Roopa, K. Naveen Kumar .


While plain concrete has poor tensile strength, low resistant to tensile cracking, low ductility, so its capacity to absorb energy is limited. Internal micro cracks are inherently present in concrete and its poor tensile strength is due to propagation of such micro cracks. Fiber when added certain percentage in the concrete improve the strain properties well as crack resistance, ductility, as flexure strength and toughness. Mainly the studies and research in fiber reinforced concrete has been devoted to steel fibers. In recent times, glass fiber have also become available, which are free from corrosion problem associated with steel fibers. in the present experimental investigation, high strength concrete of M60 is tried using Condensed silica fume (CSF) and Metakaolin (MK) as partial replacement by weight of cement. Glass fibres having aspect ratio of 857 are also used at 2% as total volume of concrete and the properties of this FRC(fibre reinforced concrete) like compressive strength, flexure  strength, split tensile strength and workability were studied.

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