Concrete is a widely used construction material for various types of structures due to its structural stability and strength. Ordinary Portland Cement (OPC) is one of the main ingredients used for the production of concrete. The search for any such material, which can be used as an alternative for cement continues. Fly ash, Ground Granulated Blast Furnace Slag, Rice Husk Ash, Metakaolin, Silica Fume are some of the pozzolanic materials which can be used in concrete as partial replacement of cement. Here the mechanical properties of metakaolin (15% by weight of cement), silica fume (6% by weight of cement) and glass fiber combined concrete are experimentally investigated through compressive strength test and split tensile strength test, at various ages of concrete in different concentrations of glass fibers. Glass fibers are added by percentage volume of concrete and these are added at 0.5%, 1.0%, 1.5 % and 2% concentrations. Various results were analyzed and improvement in strength of concrete was compared. Maximum compressive strength and Split tensile strength was obtained at 1% glass fiber replacement.